Research of Refining Effects on Refined Magnesium Alloys with Rare Earth Refined Flux and Rare Earth Oxide Refined Flux

Research of Refining Effects on Refined Magnesium Alloys with Rare Earth Refined Flux and Rare Earth Oxide Refined Flux
　　With low density, relatively high intensity and stiffness, easier cutting processing capability and good shielding properties,magnesium alloy is recently used in most of industries, such as, automobile, electronics, navigation, etc. With more and more wide in use , quickening the speed of update new products, so bring a lot of scraps. So that how to deal with and recycle of these used magnesium products and scraps is the key problem for wide use and continuance developing of magnesium alloys .The majority of the surface of the magnesium alloy scraps have all painted many kinds Block Neodymium magnets of covers, for example lacquer or oil coating etc., which become the main metal or nonmetal inclusions in magnesium alloys when magnesium alloy scraps are remelted. In the process of recycle of magnesium alloy, those inclusions qua hangover in the alloy influence the machine capability badly.
　　Therefore, reducing the content of inclusions in the magnesium alloys is a difficulty for the callback of magnesium alloy scraps and refining processing turns into the important method to get high-purity degree magnesium alloys liquid.The rare-earths have comprehensive application in many fields, for example, metallurgy, machine, glass, chinaware and petroleum, etc. Whereas, the research about appending the rare-earths to refining flux in the magnesium alloys smelting field is appeared less. According to the benchmark and calcium flux,the original flux is manufactured. Basing on the environmental pollution and the refining effect, different masses of RE and RE oxide is appended to the original flux and the refining effect is investigated for refined magnesium alloy which applied by the Block Neodymium magnets  refining flux of RE and RE oxide. The invention of the two kinds of refining flux extends the domain of application RE and RE oxide for refined magnesium alloy. The research material is the Am60 Mg alloy which is being applied widly in the world. The effect of the refined flux is researched from the shape、size、amount、

The Preparation and Friction Behavior of Rare Earth Nanofilm

The Preparation and Friction Behavior of Rare Earth Nanofilm
　　As a cutting-edge technology in late 20’s, Micro Electro Mechanical Systems (MEMS) is developing quite rapidly. The abrasion and lubrication of MEMS determines the properties of the whole MEMS system, stability and life-span. Self-assembled Monolayers (SAMs) possess characteristics including simple manufacturing process, outstanding anti-abrasion properties.Self-assembly technique is adopted in this research project. After 3-Mercapto-propyl trimethoxysilane (MPTS) thin film was prepared compactly and orderly on the surface of SiO2 and single-crystal silicon wafer and–SH group was oxidized into–SO3H group, lanthanum-based thin films were deposited on top. By taking advantages of the chemical bond established between the substrate surface and multilayer Block Neodymium magnets thin film caused by the strong chemical force between lanthanum and metal element, we were able to obtain lanthanum-based thin films of low surface energy and good lubricant properties, thus to reduce the micro-abrasion of the thin film. As indicated by experimental research and theoretical analysis, the preparation mechanism and tribological properties of lanthanum-based self-assembled monolayers was studied and proven.Atomic Force Microscope (AFM) was used to observe the surface morphology of the thin film; X-ray photoelectron spectrometry (XPS) was used to analyze the chemical status of typical elements on the surface of the thin film. In this study, self- assemble technique has been used to prepare thin films in view of the defects of currently used surface modification methods in MEMS.
　　The mechanical and tribological properties have been improved due to the special physical chemical characteristics of rare earths.Firstly, silane coupling regent (3-mercaptopropyl trimethoxysilane (MPTS)) was prepared on a single-crystal silicon substrate to form a two-dimensional self-assembled monolayer (SAM). The terminal–SH group in the film was oxidized in situ to–SO3H group to endow the film with good chemisorption trend. Lanthanum-based thin films were deposited on the oxidized MPTS-SAM by the chemisorption of the–SO3H group.Secondly, the surface energy, chemical composition, phase transformation and surface morphology of the films were analyzed by contact angle measurements, X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The experimental results strongly indicated that the lanthanum-based thin films were absorbed on the oxidized MPTS-SAM and the rare-earth film could react with the substrate by chemical bond which improved the bonding strength of the coating-substrate.
　　Thirdly, the friction and wear behaviors of the RE Block Neodymium magnets  thin films were investigated systematically. The results showed that the RE thin films had superior friction reduction and longer wear life.Fourthly, atomic force microscopy was used to analyze the micro wear of RE thin films surface. The results showed that, due to very low surface adhesion and strong bonding strength with sulfonate group, RE thin films have excellent wear resistances.This study is the first effort to prepare RE thin films using self-assembly technique, and also the first time to use atomic force microscopy, X-ray photoelectron spectroscopy, contact angle measurement were used to characterize the films. The mechanism and characteristic of RE thin films were clarified. This study is promising to be applied in MEMS devices surface modification and the application of the RE thin films self- assembling technique in MEMS.

Synthesis of Co-Based Catalysts Promoted with Rare Earth Oxides and Their Catalytic Performance for Fischer-Tropsch Synthesis

Synthesis of Co-Based Catalysts Promoted with Rare Earth Oxides and Their Catalytic Performance for Fischer-Tropsch Synthesis
　　The synthesis of liquid fuel based on Fischer-Tropsch(F-T) synthesis through the coal or natural gas would have significant meaning in resolving the problems of the national energy-supply security and environment protection in China. To develop one strong magnets kind of cheap catalyst, which has good character in liquid fuel synthesis and simplify the industrial craft or manipulation, it would cut down the investment and promote the development of liquid fuel synthesis based on F-T synthesis.This paper studied modification effects of different cobalt catalysts supported onγ-Al2O3 by XRD, BET, TPR, TEM and tested their catalytic performance for F-T synthesis.
　　The influences of the sulfur content of rare earth oxides and various space velocity and modification effects were discussed.The catalysts promoted with mixed rare earth oxides were prepared and enhanced the dispersion of the cobalt and C5+ selectivity of products. Sulfur in the mixed rare earth oxides poisoned the catalyst. Different space velocity affected the process  strong magnets  of chain growth and distribution of products. Neodymium in catalyst impacted on the reduction of cobalt and lowered catalytic activity. Compared mixed rare earth oxides with ruthenium with single rare earth promoter for the performance of F-T synthesis, the mechanism and effect of the different promoters were studied.

Study of Deep-Dyeing with Appropriation Dyes on Fine-Denier Polyamide Fabrics

Study of Deep-Dyeing with Appropriation Dyes on Fine-Denier Polyamide Fabrics
　　Clothing that are made from fine-denier polyamide, have the character of redressing, non-ironing , dimension stability , little shrinkage bearing climate , suppleness , chubbiness ,good pendency, strong elegant feeling , good breathing , comfortableness , and also have the sense of quality and function that natural fibre does not have,which make fine-denier polyamide fiber good wearability , so it can manufacture new spinning and weaving material. During the past few years, with the development of polyamide fibre, the prospect of replacing polyester by polyamide is increasing. But because of the structure characteristic of fine-denier polyamide fibre: The diameter of fibre is small, whose fibrous specific surface area of per weight is large, it determined that dyeing on fine-denier polyamide fiber has much difficulties.
　　This article mainly choose the right dyes, improve the dyeing craft and add special assistants in order to improve the dye on fine-denier polyamide fibre.Previously, the main dyes on Polyamide fibre dyeing is acid dyes, it can use reactive dyes, direct dyes and disperse dyes theoretically, but the defect is not all good. Since 1990s, the rare earth began to apply to dyes dyeing, the rare earth magnets result is outstanding. Rare earth (RE or R) is thorter of 17 kinds elements that is the lanthanides chemical elements of the periodic table --lanthanum (La) , cerium (Ce), praseodymium (Pr), neodymium (Nd) , promethium (Pm) , samarium (Sm) , europium (Eu) , gadolinium (Gd) , terbium (Tb) , dysprosium (Dy) , holmium (Ho) , erbium (Er) , thulium (Tm) , ytterbium (Yb) , lutecium (Lu), and two elements scandium (Sc) and yttrium (Y) closely related to 15 elements of lanthanum department. http://www.chinamagnets.biz/ The rare-earth elements are representative metallic elements, their metal lively is next only to alkali metal and the alkaline earth metallic elements, but more lively than the other metallic elements.
　　The rare earth ion make a combination combining with the base group such as -OH, -N=N- , -SO32+, which make the rare earth applying to printing and dyeing industry. The rare earth article was used as a kind of assistant in dyeing to increase color depths, level dyeing etc.The results indicated that the function being able to raise the dye-up of the acid dyes and the reactive dye and acquire color depths obviously by choosing the right dyeing craft on fine-denier polyamide fibre dyeing: right original temperature, the temperature rate, the temperature and the time of preserving heat, the appropriate pH value, adding the right rare earth assistant, controlling salt and alkali, and the dyeing fabric frictional fastness, wash and light fastness improved greatly.
　　It is easy to operate with adding the rare earth in dyeing, and the dye-up curve of three-primary colours are still consistent, it is beneficial to use the rare earth magnets rare earth assistant to dye. In acid dyes dyeing process,the best dyeing method is adding rare earth CeO2, whose dosage is 1% (o.w.f) , the pH value is 4, the bath ratio is 1: 20 , levelling agent dosage is 10 mL/L, which can acquire a good result; In reactive dyes dyeing process, the best dyeing method is adding rare earth La2 (CO3)3, whose dosage is 1% (o.w.f) , the pH value is 4 , the bath ratio is 1: 20, salt dosage is 30 g/L, sodium carbonate dosage is 10 g/L; A new reactive dyes dyeing method been studied in the article in acid conditions, during the period of reactive dyes dyeing, the color strengthened by adding alkali in dyeing later stage ,This craft not only increases the dye-up of dyes, but also decreaces the dosage of salt and alkali, it is one kind of new economical and environmental protection dyeing. http://www.chinamagnets.biz/    The three kinds of crafts condition carry out with large amount of testing, it can gain bright-colored polyamide cloth commonly. Test have also tested the craft, the temperature , pH value and the dispersant effect dyeing on polyamide fibre , it also have got good achievement.This article studies the dyeing on fine-denier polyamide fibre by using of the rare earth, and recrives fairly good effect, it provides an important reference value for application.

The Ammoia Shedding Experiment of Rare Earth Waste Water and Government Engineering Design

The Ammoia Shedding Experiment of Rare Earth Waste Water and Government Engineering Design
　　This article blows shedding the law processing wet law of rare earth to smelt the high consistency ammonia nitrogen waste water experiment course,and simple states experiment technology route and process flow,and has been in progress the analysis to the experimental data,and by way of the experiment result explanation, pH,the temperature of the waste water Block neodymium magnet and blows to shed time as well as gas liquid to shed effect and has the very big influence than to blows.Wastewater ammonium chloride is treatmented through the intersecting experiment;the thesis comes to conclusion that the primary and secondary parameters order of the influencing factor about blowing is pH,air tripping temperature,air tripping time and gas-liquid ratio.
　　The conclusion are drawn with single factor that the economic practical operation conditioning is pH 12,air tripping temperature 30℃,air http://www.chinamagnets.biz/ tripping time 3 hours,the gas-liuuid ratio 6000 and under this condition,the ammoniac concentration reduce from 12017.6mg/L to 336mg/L and removal rate can reach over 97.2%.At one time,the wastewater can approximately reclaim ammoniums sulphate.According to designs the firsthand information which the project description and provides,carries on the design to the Baotou rare earth ammonium sulfate waste water.The processing water volume is 200 m3/h,the content of ammonia nitrogen is 15g/L,the totle hardness is 14000mmol/L.Block neodymium magnet Removes in the waste water the ammonia nitrogen is in this design primary mission,in the waste water ammonia nitrogen mainly through blows escapes the tower carries on the steam to blow escapes,causes the ammonia to be separated from the waste water together along with the steam,but this steam turns the ammonia water through the condensation,and the ammonia water is uses in the production craft of rare earth; After blows the waste water which escapes to pass through again the ion-exchange reactor,causes in the waste water the ammonia to reach the sign.

Study on Intrinsic Magnetostriction and Structure Properties of Rare Earth Intermetallic Laves Phase Compouds Containing Pr

Study on Intrinsic Magnetostriction and Structure Properties of Rare Earth Intermetallic Laves Phase Compouds Containing Pr
　　The research and exploiture of rare earth giant magnetostriction material are of great significance and value for national defense and high technology industry, and both application and market prospect of it are highly capacious in the future. Recently, many efforts have been focused on the investigation of the pseudo-binary rare earth intermetallic compounds (RFe2type Laves phase structure). As a light rare earth element, Pr has a large contribution to the magnetostriction in this Ball Neodymium Magnets kind of material, and its price is relatively lower. But the atomic radius of Pr is so large that PrFe2 can not be synthesized successfully at ambient pressure. The Laves phase giant magnetostriction compounds synthesized at ordinary condition usually have a low content of Pr. It is of great research value to increase the concentration of Pr in this kind of compounds without debasing the magnetostriction and structure properties.
　　In this thesis, five series of Laves phase compounds containing Pr have been studied by x-ray diffraction, VSM and standard strain gauge method, specially focused on the intrinsic magnetostriction and structure properties, supplying direction and aid for further study and application.When a small amount of Tb is replaced by Pr in PrxTb1-xFe1.9 compounds, no intrinsic structure changes for the Laves phase structure. The intrinsic magnetostriction,λ111 is about 2470ppm, still very large when x≤0.2.And this implies high application potential. But when x>0.2, the secondary phase (PuNi3) comes out, and there is also a little rare earth rich phase coming out. And the,λ111 is debased by these non Laves phases. The Pr concentration in the Laves phase compounds increases in Ball Neodymium Magnets condition of adding a small quantity of B atoms or partly replacing Fe by Co. The intrinsic magnetostrictionλ111 debases with more Ce substituting for Tb in Pr0.1CexTb0.9-xFe1.9.With more Pr substituting for Tb in multi-crystal PrxTb1-xFe1.9 compounds, the magnetostriction (λ∥-λ⊥) and the saturated magnetization (Ms) decrease gradually, while the lattice constant and the coercivity (Hci) increase gradually. The tendency of lattice constants follows Vegard Law.
　　The saturated magnetization (Ms) of PrFe1.9 at room temperature is 4.58μB per formula unit, deduced by linear fit.The study of Pr0.15Tb0.85Fe1.9Bx compounds indicates that the material has a large magnetostrictionλ111 when X<0.3. http://www.chinamagnets.biz/ The small B atoms prefer to occupy the interspace sites between lattice points and this makes lattice constant a little larger. With increasing more B content, they begin to compete with Fe to occupy the lattice sites after B content exceeding certain solubility, this makes lattice constant a little smaller and meanwhile some rare earth-rich phases come out. The tendencies ofλ111measured by XRD and gauge stain method are coincidental with each other.

Synthesis and Characterization of Rare Earth Element Disilicates and Study of the Morphology and Growth Mechanism of Platinum Crystals

Synthesis and Characterization of Rare Earth Element Disilicates and Study of the Morphology and Growth Mechanism of Platinum Crystals
　　In the 21th century,there are more and more new materials and technologies. Silicates, metals and macromolecules are three kinds of basic man-made materials, and act as important roles in our life. Our research mainly concentrated on rare earth element (REE) disilicates and noble metal platinum.Disilicates, especially the REE disilicates REE2Si2O7, have been neodymium magnets widely studied for their unique magnetic, electrical and optical properties and their applications to optimize the properties of ceramic. Twelve different structure types (A-L, X) have been reported for the single rare earth element disilicates, which exhibit a complex structural chemistry under ambient conditions, due to largely the monotonic decrease in size of REE3+ cations through the lanthanide series. Based on synthesis of single disilcates, we tried to synthesize double REE disilicates. The crystals of B type structure of ErHoSi2O7 was synthesized under 1200℃and 2.0GPa using piston-cylinder apparatus. D type structure of ErHoSi2O7 was synthesized under1550℃using high temperature furnace.
　　But the sizes of Er2Si2O7 crystals are very small, they neodymium magnets are not suitable for single crystal x-ray structure analysis. But we believe that through changing experimental conditions we will synthesized the larger single crystal of ErHoSi2O7.There has been considerable interest in platinum because of its unique properties and roles in industry. It is used in jewelry, to make crucible and special containers and as a catalyst. Single crystals of platinum were encountered as a by-conduct inhigh temperature synthesis of rare earth elements disilicates. The http://www.chinamagnets.biz/ crystal structure of platinum was firstly refined from single-crystal X-ray diffraction at room temperature. The platinum single crystal crystallized in the cubic system with space group Fm-3m (no. 225) and with a = 3.925(17), Z = 4, R = 0.0478.The lattice of platinum is cubic face-centered and crystal structure is cubic close-packed. Pt atoms are regular twelvefold (bond distance = 2.775 A) coordination with the neighbor platinum atoms in this structure. From the SEM images of platinum crystals, we studied morphology and growth mechanism of platinum crystals.

Preparation and Properties of the Fluorescene Resins of Europium and the Organic Complexes of Europium and Terbium Adulterated by Iron

Preparation and Properties of the Fluorescene Resins of Europium and the Organic Complexes of Europium and Terbium Adulterated by Iron
　　The content of rare earth usually accounts for 1020% by mass in the rare earth organic complexes.As the usage amount of rare earth is big and its price goes up in the international market, so the cost of production of the luminescent materals increased, and the their application areas were restricted. The usage amount of rare earth can be reduced in the production of the luminescent materals by adulterating the cheap and popular metal ions, the cost of production of the luminescent materals can decrease. In order to reduce the cost of production of rare earth fluorescence complexes and enhance their luminescent properties, we developed the following work:1. A series of fluorescence complexes of europium and terbium adulterated by the cheap and popular iron with the first ligand of Alnico magnets aromatic carboxylic acid (benzoic acid, methoxybenzoic acid, m-chlorobenzoic acid, p-methylbenzoic acid, p-hydroxylbenzoic acid, salicylic acid, p-aminobenzoic acid, sulfosalicylic acid) and the second ligand of oleic acid and undecenoic acid have been synthesized under the optimisation conditions. Their molecular compositions and structures were characterized by means of elemental analysis, EDTA titrimetric method, FT-IR and UV spectroscopies.
　　Their thermal properties were studied by thermal analysis instrument, and the sequence of thermal stability of the fluorescence complexes of terbium adulterated by iron is Tb0.5Fe0.5(MCBA)2(OA)·3H2O > Tb0.5Fe0.5(PABA)2(UA)·3H2O > Tb0.5Fe0.5(BA)2(U- A)·3H2O > Tb0.5Fe0.5(PMBA)2(UA)·3H2O > Tb0.5Fe0.5(SA)2(UA)·3H2O > Tb0.5Fe0.5(S- SA)(UA)·2H2O。The sequence of thermal stability of the fluorescence complexes of europium adulterated by iron is Eu0.5Fe0.5(MCBA)2(OA)·3H2O > Eu0.5Fe0.5(PHBA)2(U- A)·3H2O > Eu0.5Fe0.5(MBA)2(OA)·3H2O > Eu0.5Fe0.5(PMBA)2(UA)·3H2O. Their luminescent properties were investigated by means of fluorescence instrument, and the results indicate that the luminescence characteristics of the fluorescence complexes of europium and terbium adulterated by iron are similar to that of the unadulteration the fluorescence complexes of rare earth, and emit the characteristic fluorescence of europium and terbium, their fluorescence displayed red(green).2. The relationships between the luminescent intensity of the fluorescence complexes of europium and terbium adulterated by iron and the adulteration content of iron were studied by means of chart and table. The results indicate that the emission peaks of the fluorescence complexes Alnico magnets of europium and terbium adulterated by iron changes little compared with that of corresponding fluorescence complexes, whichmeans the characteristic emission peaks of the rare earth is not affected by the addition of iron ions. The change rule is different when the adulteration content of iron is different, so the fluorescence enhancement factor R was introduced. We find the rules of effection of the adulteration content of iron on the fluorescence intensity of the objective complexes by means of factor R.
　　The results show that the complexes that can produce fluorescence enhancement in the fluorescence complexes of terbium adulterated by iron are as follows: Tb0.5Fe0.5(PMBA)2(UA)·3H2O, Tb0.75Fe0.25(MBA)2(UA)·3H2O, Tb0.75Fe0.25(SA)2(UA)·3H2O, Tb0.75Fe0.25(PM- BA)2(UA)·3H2O, Tb0.75Fe0.25(PHBA)2(UA)·3H2O, Tb0.25Fe0.75(SSA)(UA)·2H2O, Tb0.25Fe0.75(PHBA)2(UA)·3H2O, Tb0.5Fe0.5(SA)2(UA)·3H2O, Tb0.5Fe0.5(MCBA)2(O- A)·3H2O, Tb0.75Fe0.25(MCBA)2(OA)·3H2O, Tb0.25Fe0.75(MCBA)2(OA)·3H2O, Tb0.75Fe0.25(BA)2(OA)·3H2O, Tb0.75Fe0.25(MBA)2(OA)·3H2O and Tb0.25Fe0.75(BA)2(O- A)·3H2O. The effect of fluorescence enhancement of Tb0.5Fe0.5(MCBA)2(OA)·3H2O is the best. The http://www.999magnet.com/ complexes that can produce fluorescence enhancement in the fluorescence complexes of europium adulterated by iron are as follows: Eu0.5Fe0.5(PMBA)2(UA)·3H2O、Eu0.75Fe0.25(PMBA)2(UA)·3H2O、Eu0.75Fe0.25(BA)2(U- A)·3H2O, Eu0.25Fe0.75(BA)2(UA)·3H2O, Eu0.75Fe0.25(MBA)2(UA)·3H2O, Eu0.25Fe0.75(PHBA)2(UA)·3H2O, Eu0.25Fe0.75(BA)2(OA)·3H2O, Eu0.5Fe0.5(BA)2(O- A)·3H2O, Eu0.75Fe0.25(BA)2(OA)·3H2O, Eu0.25Fe0.75(PMBA)2(OA)·3H2O, Eu0.5Fe0.5(MBA)2(OA)·3H2O, Tb0.5Fe0.5(PMBA)2(UA)·3H2O, Tb0.75Fe0.25(MBA)2(U- A)·3H2O, Tb0.75Fe0.25(SA)2(UA)·3H2O, Tb0.75Fe0.25(PMBA)2(UA)·3H2O, Tb0.75Fe0.25- (PHBA)2(UA)·3H2O, Tb0.25Fe0.75(SSA)(UA)·2H2O, Tb0.25Fe0.75(PHBA)2(UA)·3H2O, Tb0.5Fe0.5(MCBA)2(OA)·3H2O, Tb0.75Fe0.25(MCBA)2(OA)·3H2O, Tb0.25Fe0.75(MC- BA)2(OA)·3H2O, Tb0.75Fe0.25(BA)2(OA)·3H2O, Tb0.75Fe0.25(MBA)2(OA)·3H2O, Tb0.25Fe0.75(BA)2(OA)·3H2O, Eu0.5Fe0.5(PMBA)2(UA)·3H2O, Eu0.75Fe0.25(PMBA)2(U- A)·3H2O, Eu0.75Fe0.25(BA)2(UA)·3H2O, Eu0.25Fe0.75(BA)2(UA)·3H2O, Eu0.75Fe0.25(M- BA)2(UA)·3H2O and Eu0.25Fe0.75(PHBA)2(UA)·3H2O. The effect of fluorescence enhancement of Eu0.25Fe0.75(BA)2(OA)·3H2O is the best. All other complexes caused fluorescence quenching.3. We used p-benzene dicarboxylic acid and ethanediol as monomers, europium ion as central ion to fabricate the red fluorescence resin of polyethylene terephthalate of europium under Alnico magnets the synthesis condition optimized by orthogonal experiment. Their molecular structures were characterized by FT-IR and UV spectroscopies. The viscosity- average molecular weight of the red fluorescence resin is 7063. The thermal stability and crystallization of the red fluorescence resin was investigated by thethermal analysis instrument, and the thermal stability of the red fluorescence resin of polyethylene terephthalate of europium was increased by the introduction of the rare earth ion. Their luminescent properties were investigated by means of fluorescence instrument, the results indicate that the red fluorescence resin of polyethylene terephthalate of europium emitted the characteristic peaks of 590nm(5D0—7F1) and 620nm(5D0—7F2) of europium ion, the characteristic fluorescence emission peak of 5D0—7F2 transition (620nm) of europium ion is the strongest in the emission spectra of the europium resin, their fluorescence displayes red.

Influence of RE and Ni on the Microstructure and Properties of Al-Zn-Mg-Cu Aluminum Alloys

Influence of RE and Ni on the Microstructure and Properties of Al-Zn-Mg-Cu Aluminum Alloys
　　Aluminum and its alloys are being used more and more widely in not only military industry such as aerospace、ship-building, but also civil kinds such as construction、electricity、telecommunication, for its many wonderful particularities such as big mining reserves、low specific gravity、high specific strength、good conductivity, etc. During the last century, with the need of the rough competition of aerospace、ship-building, the great development of automobile、construction and so on, the improvement on handling them and its own advantages, aluminum has been the most widely used non-ferrous metal material.7xxx series Al-Zn-Mg-Cu alloys, known as ultra strength aluminum alloys,Block neodymium magnet  are widely used as structural parts on airplanes、space shuttles, and so on, for some of their valuable properties such as high specific strength and stiffness、good processing ability、corrosion resistance and split tenacity.
　　7A04 alloy is a type of ultra strength aluminum alloy that has been successfully used since an early time, which has a very high strength、good strengthening effects after being heat treated、medium plasticity in state of annealed or newly quenched. Its shortcomings are mainly low structural stability、low low-frequency fatigue strength and stress corrosion cracking.In order to advancing ultra high strength aluminum alloy, this paper focused on modern ultra strength aluminum alloy development, referred to a 7A04 aluminum alloy, added RE and Ni as additional alloying elements, took available advantages of metallographic analysis、X- ray diffraction analysis、scanning electronic microscopy and mechanics properties test, researched the influences on Al-Zn-Mg-Cu aluminum . alloy after RE and Ni being added gradually, found an optimum RE and Ni content.The crystal grain and eutectic compounds in the crystal boundaries were found thick when RE addition is low, while the grains became finer、thick eutectic compounds were less and boundaries were cleaner when more RE being added.The research also proved the strength in casting of cast Al-Zn-Mg-Cu aluminum alloy Block neodymium magnet became higher when Ni content was higher within 0～1.0%(wt). while after being T5 heat treated, the alloy with a 0.25%(wt) Ni content had the highest strength and length enlargement. new phases AlNi and Al7Cu4Ni were found in such state, and big strip-like phase AlNi3 was found in grain boundaries when Ni content was up to about 1%(wt), which greatly weakened the named alloy.The highest strength 402Mpa was found with a 1.0%RE and 0.25%Ni content in T5, meanwhile the length enlargement was up to 3.3%, while in casting they were 178MPa and 0.3%.

Study on Preparation and Characterization of Nano-Hap under Different Conditions and Sorption Properties for Rare-Earth Ions in Water

Study on Preparation and Characterization of Nano-Hap under Different Conditions and Sorption Properties for Rare-Earth Ions in Water
　　As main mineral components of bone and teeth of bamniote, nano Hydroxyapatite (n-HAP) has good biological compatibilitu and activity. It is non-toxic to human body and environment. Numerous studies have been carried out to investigate the organism renovation, adsorbing metal ions, transferring drug and protein molecules. But there dosen’t have any report about the nano-HAP adsorpe the rare earth pollutions in waste water as a kind of environmental protection material.Ball Neodymium Magnets Researchers paied more attention to the preparation technologies of nano-HAP, because of it’s characteristic and merit. The present paper takes the na-HAP’s size and the appearance controllable preparation as a starting point, has used four different chemistry preparation methods prepares the nano-HAP, whose sizes and shapes are significantly different. The nano-HAP which has small size and big surface area was slected and used to repare the rare earth polluted water. The concrete research content is as follows:The nano-HAP powders were prepared by chemical precipitation. In this study, Ca(NO3)2 and (NH4)2HPO4 were used as reagents, nano-hydroxyapatite was prepared in water media. The effects of starting reactant concentration, the types of precipitating agent and heat treatment have made results in partical size, crystal, dispersion degree, purity influences.
　　The simple technological of repare nano-HAP was explored.The nano-Hap were successfully synthesized with CaHPO4 and Ca(OH)2 by hydrothermal technique. The component and the structure of all samples have been identified and http://www.chinamagnets.biz/ researched. The study indicated the reaction temperature and the solution pH valued to the HAP micrite size. The nano-HAP was prepared whose length in 300-500nm, diameter in 50-100nm and the length to diameter ratio in 3-10 under the suitable optimized condition. This kind of nano-HAP has high crystallinity and good dispersivek.The spherical nanometer nano-HAP was prepared by sol-gel method. In this mathod we taked calcium nitrate and phsophorus pentoxide as the forerunner body and synthesised in the ethyl alcohol solution. The findings indicated Ball Neodymium Magnets the aged time has great effect on the crystallinity and purity. The nano-HAP was used to remove the rare earth ions from water-soluble fluid. We selectes La, Y, Gd took the light rare earth, the heavy rare earth and the middle rare earth elements representatively. The nano-HAP was prepared by the chemical precipatation. The result indicated, the dissolution amount of HAP increased with decersing pH, and on the same pH conditions, the dissolutionrates and amounts of nano-sized HAP were all higher than the bulk HAP. At the same pH values, the immobilization ability of nano-HAP is higher than the bulk HAP. While at the same effect, nano-HAP can be achieved at a relatively low acidity. Increase the amount of nano-HAP would be conducive to the removal of rare earth ions, but at a higher pH the effect of significantly enhanced.

Study on Toxicity of Rare Earth Ceriun (Ce) to Male Mice Reproduction

Study on Toxicity of Rare Earth Ceriun (Ce) to Male Mice Reproduction
　　"There is petroleum in Middle East; there is the rare earth in China". China is the richest rare earth resource country. The cerium accounts for 28% of the rare earth total matches, occupies the first places, develops and makes use of value highly in all rare-earth elements. With the fact that applicative increasing by , the more and more cerium enter environment, then pass living creature chain, cause the increasing in the living things body and the human body, and its absorption has long-term, so absorption behind in the near future, long-term of the living creature safety becomes a neodymium magnets deserving studied problem, among them to the influence of reproductive system deserve we concern more, because reproductive system is one of the more impressionable system to poison and harmful material. But, currently study is few at home and abroad which concerns on the impact of cerium over reproductive system, therefore the experiment is put into use providing scientific basis of the safety taking by the impact of cerium over male mice reproductive system.1. Accumulation toxicity of cerium to male miceThe experiment adopted a 20d ascending dosage to detect the accumulation toxicity of cerium to male mice.
　　The results showed that: Accumulate modulus was greater than 5.0, the rare-earth element cerium didn’t have notable accumulates toxicity to male mice.2. Asia chronic toxicity of cerium to male mice2.1 Impact of cerium over male mice weightEvery 3d weighted once, and then observed the change of weight to study the impact of cerium over male mice situation during the experiment. The results showed that: In intragastric administration first 20d there was no notable difference between every group; In the first 40d, the average weight of every group was higher than PC group; there was notable difference between NC group and HD group; In the first 60d, the average weight of every group was higher than PC group, there was notable difference between HD group and NC group、LD group, LD group’s average weight was higher than NC group, but there was no notable difference. So it confirmed that to some extent cerium at 15 mg·kg-1, infused 20d can promote male mice weight growth, neodymium magnets but there was no notable difference; at 60 mg·kg-1, infused 40d can inhibit male mice weight growth, effect the male mice situation.2.2 Impact of cerium over male mice testispathological mechanism organizationThe mice were executed by pulled and broken the cervical vertebra, the testis were selected immediately .
　　By HE dyeing, observe morphology change. The results showed that: with doses increasing, epithelium of testis cell separated from basilar part obviously and somniferous tubules epithelial cells were disordered compared with NC group. It confirmed that Ce(NO3)3 can hurt male mice pathological mechanism organization.2.3 Impact of cerium over male mice testis indexThe experiment studied its organic hurt to testiculus by observing an impact of cerium over male mice testis index. The results showed that: there was no notable difference between every group; it showed that the hurt 60d inner cerium brought about to testiculus was not obvious.2.4 Impact of cerium over male mice testiculus cell enzymatic activityEnzyme system is sensitive to poison externally, the sort is changed already when changes happen in other index , especially relevant to energy metabolism enzyme system is easier to be affected. The experiment studied the impact of cerium over male mice reproductive system by neodymium magnets observing LDH、SODH、SDH、G-6PD changes. The results showed that : cerium at 15 mg·kg-1 can promote LDH、G-6PD activity、inhibits SDH activity, but they were both not have notable differences except SODH; during the period of 30 mg·kg-1 dosage had no notable restraint to SODH, but had notable restrain to LDH、SDH、G-6PD; during the period of 60 mg·kg-1 dosage have notable restrain to LDH、SODH、SDH、G-6PD. It confirmed cerium can promote enzymatic activity to some extent in 15 mg·kg-1 (except SDH), but no notable, and restrain enzymatic activity during the period of 60 mg·kg-1.2.5 Impact of cerium over male mice testiculus serum testosterone contents Main physiological action of testiculus is creating sperms; its activities affect function of mesenchyme cell. The results showed that: with contamination dosages increasing male mice serum testosterone contents had down trend, testosterone contents of MD group, HD group and PC group were notable lower than NC group.2.6 Impact of cerium over male mice the cell cycle and apoptosisThe study used One-Fluorescence Dying method on Flow Cytometer to detect the influence of cerium on the cell cycle and apoptosis. The results showed that for G0、G1 phase , cell percentages of HD group and PC group had notable difference compared with NC group, LD group、MD group、HD group had notable difference compared with PC group; for S phase, cell percentages of HD group and PC group had notable difference compared with NC group, LD group had notable difference compared with HD group、PC group; for G2 + M phase and apoptosis , HD group and PC group had notable difference comparing with NC group. It proved that cerium may arouse DNA composing a decrease during the period of 60 mg·kg-1 dosage and the apoptosis increase by.2.7 Impact of cerium over male mice the spermThe experiment studied the impact of cerium over male mice reproductive system by observing sperm’s motility、sperm’s viability、sperm count and teratospermia changes.
　　The results showed that: at 30 mg·kg-1 dosage can decrease viability、sperm count and promote teratospermia, during the period of 60 mg·kg-1 dosage had notable restraint to motility.2.8 Impact of cerium over male mice the reproductive capacityThe experiment studied the impact of cerium over mating rate、pregnancy rate and average live fetus of per litter. The results showed that : mating rate and average live fetus of per litter had descend trend, there was no notable difference between every group; for pregnancy rate, there was also no notable difference between every group. It proved that cerium didn’t have notable impaction over the reproductive capacity of male http://www.chinamagnets.biz/ mice.2.9 Impact of cerium over the fetusThe experiment studied the impact of cerium over female mice’s abnormal embryo rate、fetal death rate and abnormal embryo rate. The results showed that for female mice’s abnormal embryo rate ,HD group and PC group had notable difference comparing with NC group; for fetal death rate every group had promote trend, but only PC group had notable difference comparing with NC group; for abnormal embryo rate, MD group、HD group and PC group had notable difference comparing with NC group. So it showed that cerium can influence the growth and developmental of fetus.CONCLUSION: The experiment about cerium which were touched long time can impact mice’s weight, testicle organization’s pathology , organization’s LDH、SDH and G-6PD, testiculus serum testosterone contents, testicle cell cycle and apoptosis, mice’s sperm. Long time getting in touch with cerium had a certain function to reproduction and genetic toxicity of male mice.

Investigation on Chemical Preparation and Electrochemical Properties of RE-Mg-Ni Hydrogen Storage Electrode Alloys

Investigation on Chemical Preparation and Electrochemical Properties of RE-Mg-Ni Hydrogen Storage Electrode Alloys

In this paper, sorts of hydrogen alloys have been extensively reviewed and analyzed, and on this basis, 

the RE-Mg-Ni hydrogen storage electrode alloys were selected as the subject of this study. The study aimed to improve 

the overall electrochemical properties of the alloys, Special shape NdFeB magnets  emphasizing to optimize the lanthanum side which was 

seldom studied.The lanthanum of La0.7Mg0.3Ni3.5 and La0.7Mg0.3Ni2.65Co0.75 Mn0.1 alloys were substituted 

by cerium, praseodymium and neodymium, respectively and the La0.7-xMxMg0.3Ni3.5 and La0.7-xMxMg0.3Ni2.65Co0.75Mn0.1 （M=Ce、 Pr and Nd） alloys were prepared. We systematically studied 

the overall electrochemical properties of the alloys and gained some useful clues to improve the overall 

electrochemical properties of the alloys. The phase structures, microcosmic form the alloys were studied 

by XRD, SEM. The changes of the electrochemical properties of the La0.2Nd0.5Mg0.3Ni2.65Co0.75Mn0.1 alloys

 were studied when they were packed and kept in different ways, for exploring a simple and viable conservation 

method of the alloys.The La0.7-xMxMg0.3Ni3.5 and La0.7-xMxMg0.3Ni2.65Co0.75Mn0.1 were studied and the result showed that: different elemental substitutions 

and different substituted amount affect the discharge capacity, the activity number and the rate of capacity

 decay of the alloys. When La was substituted by Ce, Special shape NdFeB magnets activity number of alloys was decreased, cyclic stability 

of alloy electrodes was effectively improved and discharge capacity was decreased. When substituted by Pr, 

activity number of alloys was almost not changed and the cyclic stability of the alloy electrodes decreased, 

discharge capacity of the alloys can be increased to the peak when x equals 0.4. When substituted by Nd, 

activity number of alloys was almost not changed, cyclic stability of alloy electrodes was effectively 

improved and discharge capacity was increased. The La0.3Pr0.4Mg0.3Ni3.5 and La0.2Nd0.5Mg0.3Ni2.65Co0.75 

Mn0.1 had better comprehensive electrochemical properties compared with other hydrogen storage alloys studied 

in this paper.The activity number of the alloys were eleven and eight, and the maximum discharge capacity were 

238mA·h·g-1 and 251mA·h·g-1, respectively. The rate of capacity decay of La0.3Pr0.4Mg0.3Ni3.5 alloy was 12.6% after 100 cycles. 

The rate of capacity decay of La0.2Nd0.5Mg0.3Ni2.65Co0.75Mn0.1 was 5.6% after 150 cycles. 

Structure analyses showed that the main phases of alloys were MgNi2 and LaNi5 phases that had the 

close connection with the charge discharge capacity of the alloys. LaCo5 phase and LaCo3 phase content 

increased with increasing Co content. The Lao.2Ndo.5Mgo.3Ni2.65Coo.75 Mn0.1 also had Nd2Ni14 phase 

and La4Co3 phase which may improve the cyclic stability of the alloy; Ni6Mn8 phase may increase the discharge

 capacity of the alloys.The sample sealing method of the alloys was experimental explored. The alloy encapsulated

 and conserved for about a week showed the same properties Special shape NdFeB magnets  as the alloy which was just made. So it was a simple, 

effective and cheap consrvation method to seal and kept hydrogen storage electrode alloys in vacuum bags. 

While the alloy was kept not in vacuum bag, the longger placed, the worse the cyclic stability of the alloys. 

The placed alloys had the Nd2O3 phase, Ni phase, La（OH）3 phase and Ni（OH）2 phase. The microcosmic form of the alloys was not the single figure. 更多还原

Study on Photoelectric Properties of Novel Rare Earth Complexes in Doped Systems

Study on Photoelectric Properties of Novel Rare Earth Complexes in Doped Systems
　　The luminescence of rare earth complex feathers sharp-band emissions、pure chroma、rich colors and high inner quantum efficiency. However, devices based on rare earth complex have poor stability and short lifetime which restrict the application of rare earth complex. Two methods which improve the performance of devices based on rare earth are to synthesize new materials and to change the device structure by using different transporting materials. This thesis focuses on a novel complex Tb0.5Eu0.5(TTA)3Dipy and its application in electroluminescent devices. In addition, we fabricated white light emitting device based on rare earth complex.
　　The detailed contents are as follows:1 Synthesis and the characteristics of the novel rare earh complexThe novel material Tb0.5Eu0.5(TTA)3Dipy was synthesized. By doping the rare earth complex into polymer PVK, the mechanism of energy transfer was Magnetic lifter also studied. Compared with the material Eu(TTA)3Dipy, it is concluded that the Tb3+ acts as an energy transfer bridge that helps energy transfer from PVK to Eu3+ efficiently.2 Fabrication and properties of EL devicesThe EL device was fabricated with the structure of ITO/PVK:Tb0.5Eu0.5(TTA)3Dipy/PBD/Al by using PVK:Tb0.5Eu0.5(TTA)3Dipy as the emitting layer. http://www.999magnet.com/ Through measurement of EL spectra, the mechanism of EL was studied. The emission intensity with different doping ratios was compared3 The electroplex emission in organic electroluminescent diode based on rare earth materialIn the EL spectra of the device with the structure of ITO/ PVK:Tb0.5Eu0.5(TTA)3Dipy/BCP/ Alq3/Al, a new peak at 490 nm was detected. Through the analysis and compare of the different devices, the mechanism of the new emission was investigated. It was concluded that the new emission is the electroplex originating Magnetic lifter from the interface between the ligand and BCP.4 The investigation of the white light emitting device based on co-doped systemA novel organic electroluminescent device was fabricated with the structure of ITO/ PVK: Eu(aspirin)3phen : Alq3/BCP/Alq3/Al, which use PVK: Eu(aspirin)3phen:Alq3 as the emitting layer. The mechanism of energy transfer and electroluminescence were studied. Kept the quality ratio of PVK and Eu(aspirin)3phen

Study on Preparation and Properties of Surface Modified Rare Earth Compound Nanoparticles as Additives in Lubricating Oil

Study on Preparation and Properties of Surface Modified Rare Earth Compound Nanoparticles as Additives in Lubricating Oil
　　Recently, studies on the nanometer particle , size of which varies between 1-100nm , have been the one of the most active domains in chemistry , physics and material science. Comparing to molecular material and block body material, nanometer particle have many special physical and chemical properties. At the same time studies on the preparation and properties of organic-inorganic compound nanoparticle arouse even more attention. Research on the synthesis and properties of surface modified nanoparticle is a branch of this area.Although the rare earth elements and their Neodymium Magnets compounds have many special functions resulted from 4f electron, the research on rare earth nanoparticle surface modified, as the lubricant additive is the emergent subject.
　　Therefore, the study and http://www.999magnet.com/ development of organic-inorganic rare earth compound nanoparticle, having high load carrying capacity, anti-wear and friction properties, have great promise in the theory and application.This thesis adsorption co-precipitation surface modification method was used to synthesize organic compound surface modified rare earth carbonate nanoparticle in the alcohol - water body. The solubility of surface modified nanoparticles in base oil was enhanced by organic surface modification. After dispersing the nanoparticle in the mineral foundation lubricating oil, lubricating ability of it was tested by MRS - 10P load carrying anti-wear testing machine. The friction reduction property of the organic fat chain, anti-wear and load carrying capacity of nanoparticle, Neodymium Magnets  as well as the special function of rare-earth element, enhances together the tribological ability of lubricating oil, opening up the application of rare earth compound in lubricant area. Structures of surface modifiers and the surface modified nanoparticles were characterized by elemental analysis, IR, ~1HNMR and TEM.

龙门山构造带中—北段构造流体地球化学特征及其与成藏关系的探讨

题名:龙门山构造带中—北段构造流体地球化学特征及其与成藏关系的探讨
作者:薛钧月
学位授予单位:成都理工大学
关键词:龙门山中-北段;;构造流体;;同位素地球化学特征;;沥青脉体;;微量元素地球化学特征
摘要:
 龙门山构造带位于扬子板块西缘,扬子陆块与松潘陆块之间的过渡带,地处青藏高原与四川盆地分界线上。龙门山陆内复合造山带自西向东以茂县-汶川断裂(后山断裂)、北川-映秀断裂(中央断裂)、安县-都江堰断Segment neodymium magnets裂(前山断裂)和广元-大邑(隐伏)断裂(山前断裂)为界,北东-南西向展布。沿走向大致以北川-安县一线和卧龙-怀远一线为界,将造山带由NE向SW分为三段,即龙门山北段、中段和南段。
 在龙门山中段阿坝-遂宁综合地质剖面和龙门山北段青川沙坝-广元利州宝轮地质剖面上采集不同地层的围岩、不同地层中不同产状的方解石脉体,对其样品的碳、氧、锶同位素地球化学特征的综合研究对比,初步建立了龙门山中-北段及相邻构造单元间流体的来源、运移模式和古流体体系;初步讨论了北段亢家洞和矿山梁地区出露的沥青脉体及围岩微量元素地球化学特征,初步探讨了流体活动与油气保存的关系。
 对龙门山中-北段构造流体的同位素地球化学特征研究,得出如下结论: 1、龙门山中段及其邻区不同构造-地层单元(以区域性大断裂为边界)存在不同来源的古流体。根据脉体的出露特征和构造特征,自北西向南东将研究区分为五个古流体活动亚带,依次为阿坝-龙日坝褶皱带流体亚带(简称亚带1,下同)、壤口-黑水构造转换带流体亚带(亚带2)、茂汶-陇东韧性剪切带流体亚带(亚带3)、龙门山后山推覆带流体亚带(亚带4)、龙门山前山冲断带流体亚带(亚带5)。不同流体活动亚带的流体来源有所不同。亚带1中流体以高碳、低氧、较低锶为特征,显示受大气降水影响。亚带2中石炭-二叠系流体主要来自于围岩,三叠系脉体表现出低碳、低氧、较低锶的特征,受构造运动影响,脉体的形成有深部物质及大气降水的参与。亚带3流体部分来源于寄主围岩地层,同位素特征与海相碳酸盐岩相似;部分流体碳氧同位素略低于海相碳酸盐岩,显示受大气降水影响;部分脉体表现为低氧、低碳、Segment neodymium magnets高锶特征,显示同时受到深部流体和浅部流体的参与和影响。亚带4部分流体碳氧同位素与海相碳酸盐岩相似,指示脉体来自于围岩;部分流体低碳,来源于深部或受到深部流体影响;部分脉体低氧、高锶,指示流体可能来自于大气降水;部分流体高氧、低碳,说明受到有机质作用的影响;亚带5中脉体部分同位素特征与海相碳酸盐岩相似,指示流体来自于围岩地层;部分脉体低氧,显示来自于大气降水;少部分脉体低碳、低锶,指示可能来自于深部;部分脉体低氧高碳,表明流体可能受到了有机质成分的混入。
 2、横向上,不同流体亚带的流体存在着规律性的递变特征。总体上来说,茂汶-陇东构造亚带曾经是古流体活动的中心,古流体活动最强,期次最多,两侧朝西北方向和东南方向古流体活动逐渐减弱,期次减少。茂汶-陇东韧性剪切带与中央断裂是明显的氧同位素、锶同位素的变化界限。氧同位素表现为:自北西至南东,亚带1、2中流体<亚带3、4 <亚带5;锶同位素表现为:在茂汶断裂两侧的亚带3、4中含量最高,1、2亚带明显降低,5亚带最低。
 3、研究区的流体在总体上表现构造-地层控制的分层特征。可根据其同位素含量特征将其分为上部流体(三叠系流体),中部流体(泥盆-二叠系地层中流体),下部流体(寒武系-志留系流体)。上部流体体系与中部和下部流体体系是相对独立的体系,基本不存在流体交换。中部流体体系和下部流体体系存在着一定程度上的流体交换。而上部流体体系受深部流体和地表大气降水的影响程度较大。
 4、龙门山中段及邻区不同块体间可能发生了流体交换作用。茂汶断裂隔开的松潘构造带和龙门山构造带在构造带边缘,存在着流体交换作用,是深部热流体、地表大气降水和地层水流体交换的场所,而盆山间流体同样存在着交换和运移,龙门山流体有向盆地发生侧向迁移的可能和趋势。
 5、通过对龙门山北段沥青脉体和围岩的微量元素和稀土元素地球化学特征的研究,初步认为:古沥青的微量元素和稀土元素地球化学特征判断存在着震旦系烃源层、寒武系烃源层,以及部分二叠系和三叠系烃源层的可能;寒武系地层不同产状的沥青中,沥青碎屑和干沥青可能是由煤演化而来的,而脉状沥青和侵染状沥青可能是由石油演化而成。
 6、从无机地球化学角度初步探讨了http://www.999magnet.com/流体活动与油气保存的关系,认为:在龙门山中段茂纹断裂及两侧流体活动强烈,为相对开放体系,对油气保存不利;在北川断裂与安县断裂之间流体活动相对封闭,为挤压性流体,构造改造相对较弱,相对有利保存;在北段的矿山梁地区寒武系的沥青脉体存在多种来源,并且可能不同程度地受到了构造以及深源或浅源流体的影响,相对不利于油气的保存,而震旦系地层相对较稳定,构造改造较弱,可能有利油气的保存。
学位年度:2009

新疆东准噶尔卡拉麦里蛇绿岩及姜巴斯套组火山岩研究

题名:新疆东准噶尔卡拉麦里蛇绿岩及姜巴斯套组火山岩研究
作者:汪帮耀
学位授予单位:长安大学
关键词:卡拉麦里;;蛇绿岩;;洋中脊;;姜巴斯套组;;双峰式火山岩;;碰撞后拉张伸展
摘要:
 卡拉麦里蛇绿岩带分布于新疆准噶尔盆地东北缘,该带西起卡拉麦里清水泉,南明水以东,向北东延伸,与内蒙索伦山、贺根山蛇绿岩Block Neodymium magnets相接。该蛇绿岩带在新疆境内,走向NNW,全长约150km,宽5～15km。蛇绿岩分布区内出露的地层主要是石炭系,岩石组合以陆源碎屑岩、火山碎屑岩和火山熔岩为特征,其代表性的地层单元为下石炭统姜巴斯套组。
 卡拉麦里蛇绿混杂岩的岩石组合为变质橄榄岩、辉长岩、辉绿岩和基性熔岩等。该蛇绿岩中辉长岩的LA—ICP—MS锆石U—Pb年龄(329.9±1.6Ma)证明卡拉麦里蛇绿岩的形成时间为早石炭世维宪期。蛇绿岩中辉长岩和基性熔岩REE球粒陨石标准化和微量元素原始地幔标准化分配型式呈平坦型分布,大离子亲石元素丰度低,成分上非常相似于正常的MORB,同时无岛弧及洋岛岩石的地球化学特征,表明该蛇绿岩很可能形成于大洋中脊。结合该区野外地质特征、岩石地球化学和高精度年代学等方面的研究,认为卡拉麦里洋盆形成于泥盆纪初期,最终闭合于早石炭世谢尔普霍夫期。
 姜巴斯套组岩石与该蛇绿岩呈构造接触,该组火山岩可划分为六个岩性段,并且在第三、四、五岩性段有特征的双峰式组http://www.999magnet.com/合:碱性玄武岩-酸性火山碎屑岩-粗面岩。该组火山岩除了火山碎屑岩为亚碱性系列外,火山熔岩均为碱性系列。岩石的稀土元素配分曲线均为轻稀土元素富集型,无明显铕异常,富集大离子亲石元素元素,相对略亏损高场强元素。通过对该组火山岩的野外地质特征、岩相学以及地球化学特征分析,认Block Neodymium magnets为该组火山岩形成于卡拉麦里洋盆闭合碰撞造山后的拉张伸展环境。结合粗面岩LA—ICP—MS锆石U-Pb年龄(319.8±2Ma),认为该区在早石炭世末期就进入了碰撞后的陆内伸展拉伸阶段。
 综合研究表明,自泥盆纪初期卡拉麦里洋盆打开,至泥盆纪末期该有限洋盆开始闭合,直到早石炭世谢尔普霍夫期该洋盆完全闭合。随后从早石炭世末期开始,该区又进入了碰撞后的拉张伸展环境,并伴随着双峰式火山岩的出现以及该区北侧的花岗岩浆活动。
学位年度:2009

邻羟基醛类配体的荧光探针设计及不对称催化反应研究

题名:邻羟基醛类配体的荧光探针设计及不对称催化反应研究
作者:张东
学位授予单位:兰州大学
关键词:邻羟基醛;;Schiff碱;;离子选择性;;不对称催化;;荧光探针
摘要:
 本文主要介绍了以邻羟基醛为母体的多功能配体在荧光探针、不对称催化方面的应用,并着重研究了几种对离子有选择性的配体。全文共分四部分:
 1、介绍了本文的研究背景,重点介绍了与本文有关的Schiff碱的发展现状,主要包括Schiff碱的分类和主要应用、荧光探针以及稀土发光配合物的相关理论知识。
 2、合成和表征了以萘醛为母体Magnetic lifter的Schiff碱配体及其配合物。以邻羟基醛(水杨醛、萘醛)为母体,合成了两种配体,实验结果表明分别对Y~(3+)、Zn~(2+)有着较好的选择性。通过红外、元素分析、紫外光谱、核磁共振氢谱以及单晶衍射等手段确定和推测了配合物的结构,并探讨了选http://www.999magnet.com/择性机理。
 3、初步探讨了水杨醛母体的开链冠醚类Schiff碱对稀土的敏化及荧光探针。介绍了,以水杨醛为母体合成了一系列开链冠醚的Schiff碱,并对个中有荧光性质的配体做了紫外、荧光性质的研究,合成的配体中有对Mg~(2+)有选择性的L~8、对Tb~(3+)很好敏华作用的配体L~(11)。
 4、研究了以邻羟基萘醛为母体的手性氨基醇催化酮的不对称还原反应。以α-萘酚为起始原料,经过几步转化,合成出了以邻羟基萘醛为母体的脯氨Magnetic lifter醇结构催化剂L~(13),并应用于硼烷对前手性酮的不对称还原反应进行了研究,该反应中最高达到了87%的ee值,并出现了产物构型的翻转现象。
学位年度:2009

晋南平顺地区矽卡岩型铁矿成矿作用特征及成矿预测

题名:晋南平顺地区矽卡岩型铁矿成矿作用特征及成矿预测
作者:张海东
学位授予单位:长安大学
关键词:平顺地区;;早晚两期杂岩体;;矽卡岩型铁矿;;成矿作用;;找矿标志
摘要:
 平顺地区位于山西省南部,是华北地区重要的矽卡岩铁矿矿集区。铁矿石不仅品位高,而且岩体出露较好,适合矿体开采及理论研究。矿体形态复杂,大小不一,主要赋存于中生代中性侵入体与中奥陶统碳酸盐岩接触带及附近。Special shape NdFeB magnets 褶皱和断层以及接触带是重要的控矿构造。矿石类型单一,主要矿物为磁铁矿。矿化蚀变具明显的分带现象。
 晋南平顺地区杂岩体是一套主要由早、晚两期侵入体组成,早期侵入体以橄榄辉长辉绿岩为主,晚期侵入岩主要为闪长岩—二长闪长岩,二者接触部位为晚期暗色不等粒闪长岩。早期侵入体中有大量橄榄石、辉石以及角闪石捕掳晶出现,相对晚期侵入岩含捕掳晶较少,但偶尔可以见到斜长石成分和结构不平衡现象。早、晚两期侵入岩体具有相似的地球化学特点:低硅高镁;轻稀土富集而重稀土亏损,并显示轻微Eu正异常;富集大离子亲石元素(如Sr、Ba、K)和亏损高场强元素(如Nb、Ta、Ti);富集放射性成因Pb(~(206)Pb/~(204)Pb=17.741～18.474,~(207)Pb/~(204)Pb=15.429～15.612)。岩石学和地球化学特征表明这套早、晚两期岩体是同源的,起源于富集地幔部分熔融并底侵到下地壳,所带的高热流引起古老下地壳(特别是TTG)的部分熔融,形成花岗质岩浆,然后形成混合岩浆,再http://www.999magnet.com/经过分离结晶作用形成了平顺地区杂岩体。在此基础上建立了岩体成矿模式。
 平顺地区矽卡岩型铁矿床的形成在大地构造上受邯郸地幔柱控制,与铁矿密切相关的钠长石化岩石的原岩为晚期侵入岩,其为铁矿体的形成提供成矿物质,并与早期侵入岩作用,同化部分早期基性—超基性侵入岩,形成富含铁质岩体,同时晚期侵入岩内部最少也有2～3次脉动侵入岩体,其所含热液不仅是成矿物质的载体,而且所产生的压应力和热能也成为成矿流体运移的驱动力。由此建立了相应的成矿模型。
 通过总结以往地质资料及野外研究,指出第一构造岩浆岩带和第二构造岩浆岩带分别具有不同的侵位机制并对相关矽卡岩型铁矿产生制约:一带Special shape NdFeB magnets杂岩体侵位属被动就位机制,岩体内部可形成呈捕虏体状赋存的铁矿体,远离接触带仍具找矿潜力;二带杂岩体属主动就位机制,岩体内部捕虏体罕见,呈捕虏体状赋存的铁矿体很少见到,相应的铁矿床主要产于岩体与围岩接触带处,少量形成于碳酸盐岩围岩中,主动就位机制下形成的褶皱是重要的容矿构造。
 在充分研究地层、岩浆岩、构造、接触带及蚀变带与成矿之间关系的基础上,总结控矿因素和成矿规律,并指出找矿标志。并在平顺地区成矿地质条件好的区域开展地质调查、磁法测量工作,从而圈出找矿靶区,分别为芦沟、龙降沟岩体南缘、落赛及东郊地区。为寻找深部隐伏矿或盲矿提供一定依据。
学位年度:2009

Study on the Properties and Synthesization of Rare Earth Luminescence Material Using in Fluorescence Fibre

Study on the Properties and Synthesization of Rare Earth Luminescence Material Using in Fluorescence Fibre
　　The study of rare earth complexes luminescence, being the cross science of inorganic materials luminescence, organic materials luminescence and organism luminescence, is very important for fundamental and applied research. The rare earth polymer materials have attracted considerable interests of they assume both good luminescent characteristics and high color purity of rare earths and the excellent machinability of polymers. There are two preparation methods: (1) organic rare earth complex was doped into polymer to form rare earth-doped polymer. (2) rare earth complex was linked into the chain of the polymer to form rare earth-boding polymer, then polymerize with other organic Magnetic lifter monomer to form luminescence co-polymer.This paper use 4-Methylbenzoic acid and 1, 10-Phennathroline for complex, the organic nano-rare earth luminescence material was synthesized. And prepare the PP luminescence fibre.
　　The structure and the property of the rare earth luminescence material and the luminescence fibre were characterized by elemental analysis, FT-IR spectra, DSC, TG and TEM. The results show that the diameter of the organic rare earth material was only 100nm with steady structure, excellent thermo and fluorescence property. The rare earth ion was encircle by the organic part and disperse uniformity in the PP fibre, and the addition of the rare earth material don’t have an influence on the mechanic and thermo property, but it can short the time of crystal time. The luminescence property of the PP fibre was excellent, and the luminescence intensity enhanced with the rate increase of the rare earth http://www.999magnet.com/ material.In this paper, we synthesize a series of rare earth complex using benzoic acid ramification contain different substitute group or the same substitute group in different position for first time, and the luminescence property of the rare earth material were studied. The results show that the benzoic acid ramification was more easier to coordinate with rare earth ion when its acidity was stronger; and the fluorescence effect of rare earth material synthesized with para-position ligand are better than the ortho-position and meta-position ligand’s. Further more, the fluorescence properties of rare earth material was best when the Ph=7, the ratio of Ln3+、ligand、phen is 1:3:1.

Effects of Rare Earth on the Accumulation of Selenium in Soybean Sprouts

Effects of Rare Earth on the Accumulation of Selenium in Soybean Sprouts
　　The selenium-enriched soybean sprouts were prepared with soybean as raw materials, and add 10μg·mL-1 selenium and different concentrations of rare earth La3+、Ce3+、Nd3+ into cultivation solution by soaking and spraying. The effect of rare earth on accumulation of selenium in soybean sprouts was studied .And content of total selenium were determined by using a fluormetric method; The content of organic selenium is analyzed by the method of still-placed and oozing-out the inorganic selenium. The result indicates that rare earth can promote soybean sprouts to Neodymium Magnets absorb Se and increase the content of total selenium and organic selenium, but the impact of different rare earth element has discrepancy. The most effective rare earth element is La.
　　When the concentrations of La3+ is below 6μg·mL-1, content of total selenium and organic selenium were both raised gradually with the increase of the La concentration, but decreased when the concentrations of La3+ is above 9μg·mL-1. 6μg·mL-1 La3+ exhibits the strongest promotion ability on the accumulation of Se in sprouts, content of total selenium and organic selenium was increased to 65.68μg·g-1 and 53.58μg·g-1 respectively, which are almost 1 times to the contrastive one.The protein of selenium-enriched soybean sprouts is isolated by the method of alkali-solution and acid-isolation. The result indicates La can increase Se content and total content of amino acids in proteins extracts, increasing by 12.04% and 2.31% respectively as opposed to control. The content of rare earth La is analyzed. And the data indicates that the contents of rare earth in the samples increase with the increase of the concentration of rare earth added in the cultivation solution. When the concentrations of rare earth Neodymium Magnets added in the soybean sprouts is 7μg mL-1, the highest content of rare earth in the soybean sprouts is 30.35μg·g-1, which is below the tolerable upper intake level of rare earth for adults .Finally antioxidant analysis show that low concentration La could promote proteins to scavenge hydroxyl and superoxide radicals effectively, especially for the superoxide radicals. In general, rare earth La is an effective and safe accelerant for soybean sprouts to absorb Se.

凤县—两当地区北秦岭构造带地质组成及构造特征

题名:凤县—两当地区北秦岭构造带地质组成及构造特征
作者:董增产
学位授予单位:西北大学
关键词:北秦岭;;草滩沟群;;宝鸡岩体;;秦岭岩群;;构造演化
摘要:

 北秦岭构造带是秦岭造山带形成和演化的关键部位。本项研究工作选择前人较少涉猎的北秦岭西段、陕西风县唐藏-甘肃两当张家庄地区。通过对该区出露的秦岭岩群、草滩沟群及北部的花岗岩体开展野外地质观察、关键地段strong magnets地质剖面研究、岩相学、岩石地球化学及同位素年代学等工作,结合前人研究成果及邻区地质特征尝试探讨北秦岭构造带的形成及演化。

 研究表明,区内出露的草滩沟群主要是一套火山-沉积岩系,以火山碎屑岩为主,甚少发育熔岩,这与东部以基性熔岩为主的二http://www.chinamagnets.biz/郎坪岩群存在显著差异。对样品中的玄武岩岩屑进行主、微量及稀土元素分析测试,结果显示具岛弧火山岩特征。

 草滩沟群北部主要发育黑云二长花岗岩。锆石U-Pb年龄为220-210Ma,即形成于印支期,应属于宝鸡花岗岩岩基的一部分。地球化学特征显示,其形成于板内构造环境,揭示北秦岭造山带在印支期已进入较为稳定的板内构造演化阶段。

 研究区内秦岭岩群发育富铝质副变质岩(矽线石榴石黑云斜长片麻岩),其原岩属于泥质碎屑岩。通过变质矿物组合研究,揭示其变质程度达高角闪岩相,具典型的矽线石+石榴石+黑云母+斜长石+石英矿物组合。矽线石榴石黑云斜长片麻岩中分离出大量碎屑锆石,LA-ICP-MS锆石U-Pb定年结果显示具有0.4-0.5Ga和1.8-2.0Ga两个显著的年龄峰期。0.4-0.5Ga为变质锆石年龄,反映加里东期变质事件。1.8-2.0Ga为岩浆锆石年龄,与吕梁运动时限一致。根据该年龄信息,结合邻区及区域地质特征推测北秦岭的形成及演strong magnets化大体可划分为四个主要阶段:一、早元古代晚期(-1.85Ga)华北克拉通基底形成,其南缘大陆棚接受北部大陆物源沉积(即后来的秦岭岩群初生阶段),:二、中元古代华北克拉通南缘大陆棚裂解,秦岭岩群从其南缘脱离,宽坪裂谷形成;三、新元古代-早古生代,秦岭岩群南北两侧分别形成有限的南部古海盆和北部古海盆:四、古生代(加里东期)秦岭岩群南、北侧海盆相继闭合,导致华北克拉通、北秦岭构造带和扬子板块最终拼合。
学位年度:2009

中国东部承德盆地大北沟高Ti安山岩年代学与地球化学研究及其意义

题名:中国东部承德盆地大北沟高Ti安山岩年代学与地球化学研究及其意义
作者:肖媛媛
学位授予单位:西北大学
关键词:华北克拉通;;承德盆地;;大北沟组;;高Ti安山岩;;年代学;;地球化学
摘要:

 本文通过中国东部承德盆地大北沟组底部高Ti安山岩的研究,在汪方跃研究基础上,进行了更进一步的地球化学分析,包括对承德盆地野rare earth magnets外个别样品的重新补采(08CD21,08CD22,08CD23、XYY(仅做辅助对比之用))、锆石U-Pb、Lu-Hf原位微区LA-MC-ICP MS联机分析(08CD21,08CD22,08CD23)、部分样品主量、微量(CD-13、DBG-30、DBG-31、DBG-32、08CD21、08CD22、08CD23、XYY)以及Sr-Nd-Pb同位素(CD-13、DBG-30、DBG-31、DBG-32)的重新测试或补测。

 根据锆石形态学和Th/U比研究,推断高Ti安山岩仅得到的几颗锆石年龄代表了上涌岩浆捕获围岩中的锆石年龄,最年轻一颗(08CD22:Sp3)年龄120±1Ma,限定了高Ti安山岩形成的上限时间。样品08CD21安山岩的http://www.chinamagnets.biz/加权平均年龄113.8±1.2Ma(n=26),与汪方跃所得到的顶部安山岩年龄(113.6±0.87Ma)相近,证明大北沟组这一系列岩石基本为同时期形成。

 根据各主量元素间的相关性、微量元素、稀土元素配分模式以及高场强元素含量,特别是Ti、P元素明显的含量变化,推断玄武岩与顶部安山岩为同一源区岩浆的演化系列,而高Ti-P安山岩与玄武岩系列则可能源于不同源区。高Ti安山rare earth magnets岩可能为软流圈地幔在上涌过程中与地壳轻微反应后、岩浆再次快速上升的产物。玄武岩则反映下地壳发生了更进一步较强烈的局部熔融、并混染部分演化程度较高的软流圈地幔的过程。

 大北沟组火山岩的形成可能反映了120～113Ma软流圈地幔与下地壳间相互作用逐渐增强的过程。
学位年度:2009

辽东—吉南硼矿中镁质岩石的岩石学及成因

题名:辽东—吉南硼矿中镁质岩石的岩石学及成因
作者:吴振
学位授予单位:中国地质大学（北京）
关键词:辽吉硼矿;;镁质岩石;;岩石学
摘要:

 硼是一种用途广泛的化工原料矿物,它主要用于生产硼砂和硼酸以及元素硼。我国是最早发现和认识硼矿的国家,硼矿资源大neodymium rare earth magnets部分集中在辽宁、吉林、青海及西藏等4个省和自治区,而辽宁、吉林两省保有储量占全国总量的一半以上(52.5%),集中分布于大石桥后仙峪、凤城翁泉沟与集安高台沟等,构成东西向延伸的线状成矿带,青海、西藏两省(自治区)保有储量占全国总量的1/3以上(36.4%),这四个省和自治区硼保有储量占全国总量的88.9%,其余的储量多为小矿,零星分布于湖南、广西、江苏、内蒙古及新疆等地。

 本区硼酸盐矿床矿物是以硼镁铁为其主要元素组分,它们是不同来源的物质结合在一起,一般镁质来自高镁岩石,铁质来自早期的岩石,它们是硼酸盐矿物的容矿岩石,被后期硼酸溶液交代形成铁镁硼酸盐矿物。容矿岩石是高镁或铁质岩石,包括镁橄榄岩、橄榄玄武岩和富镁大理岩类,三种岩性或者共生互相http://www.chinamagnets.biz/包容,或者独立产出,其CaO/MgO为0.04-2.04。镁橄榄岩主要分布于大石桥后仙峪矿区,镁橄榄岩的主要矿物成分为镁橄榄石和贵橄榄石,富镁大理岩主要产于宽甸砖庙矿区及集安横路东岔地区,根据集安地区大理岩岩石学及岩性特征,可以把镁质大理岩进一步划分为三种岩性,灰黑色泥质大理岩、灰白色条带状大理岩及红褐色团块状大理岩,其中灰黑色泥质大理岩、灰白色条带状大理岩与矿化关系密切。而凤城翁泉沟及集安高台沟等地的硼镁铁矿化岩石主要是橄榄玄武岩,在宽甸二人沟一带也有橄榄玄武岩分布。

 镁橄榄岩的产状及岩石学特征显示具有火山喷出岩特征,属于超基性火山喷出岩,即类科马提岩;而高镁大理岩类岩石也具有火山岩浆喷发沉积成因特征。

 辽东-吉南硼矿区的富镁大理岩和镁橄榄岩两者空间关系上密切共生,明显出现互相包容及共生现象,呈透镜状、似层状局限分布;两者岩石主量元素上具高镁特征,都可成为硼矿的沉淀剂,且镁橄榄岩明显显示岩浆成因特征;在稀土元素方面两者均表现出相似的大陆拉斑玄武岩形成环境;富镁大理岩的C-O同位素显示岩浆成因neodymium rare earth magnets特点。这些特征现象均反映这是一种海下岩浆喷发成因镁质岩浆岩,由于熔离作用分异成镁质碳酸岩浆和镁橄榄岩浆,这两种岩浆是同源熔离分异产物。富镁碳酸岩与镁橄榄岩的存在,为辽东-吉南古元古代镁质非金属矿集区的形成提供了矿源层。
学位年度:2009

山西省繁峙县孙庄杂岩体的锆石成因矿物学与岩石地球化学研究

题名:山西省繁峙县孙庄杂岩体的锆石成因矿物学与岩石地球化学研究
作者:宋继叶
学位授予单位:中国地质大学（北京）
关键词:锆石成因矿物学;;岩石地球化学;;孙庄杂岩体;;山西
摘要:

 孙庄杂岩体位于山西省繁峙县孙庄村东,是晋东北恒山山脉中段南麓具有代表性的基性-中酸性岩浆岩系列。在孙庄杂岩体的北部和东南部Ring neodymium magnet边缘分别发育有义兴寨金矿和辛庄金矿,其与两个矿床的形成有密切的关系。因此,深入研究孙庄杂岩体的成因矿物学和岩石地球化学对阐明金矿床的成因有重要意义。

 本文着重从孙庄杂岩体锆石成因矿物学、岩石地球化学方面着手,研究了孙庄杂岩体的成因及其与金矿的关系,取得了如下认识:

 1.孙庄杂岩体剥蚀较浅,内部岩性主要由辉长岩、二长岩、正长闪长岩、石英闪长岩、花岗闪长岩、似斑状http://www.chinamagnets.biz/花岗岩组成,其中以正长闪长岩(即二长闪长岩);岩石结构构造、矿物环带及蚀变等现象暗示了孙庄杂岩体形成过程中有岩浆混合作用,侵位后遭受了后期热液蚀变及构造应力作用;

 2.主要元素的含量、比值、相关关系及变化规律的Ring neodymium magnet特征表明,孙庄杂岩体具有从中基性岩石到酸性岩石更加富硅、富铝、富碱、贫镁铁的特点,显示高钾钙碱性,岩浆结晶分异作用中等偏强;稀土微量元素的分析表明,孙庄杂岩体在成岩过程中主要受同源岩浆的结晶分异控制,部分可能受到太古宙斜长片麻岩熔融作用的影响;

 3.锆石的形态、成分和U-Pb定年研究表明,孙庄石英二长闪长岩的结晶年龄为133±0.3Ma,源区位于壳幔混合区;岩浆以壳源为主有幔源物质混入,且其形成过程中岩浆富水、富碱质;石英二长闪长岩形成过程中岩浆处于氧化环境,岩石形成后叠加有岩浆期后热液蚀变,处于相对还原的环境。

 综上所述:孙庄杂岩体于中生代燕山晚期侵位,与义兴寨金矿床主成矿期年龄(131.4±3.1 Ma)接近。杂岩体为壳幔混合成因,在其侵入过程中带来了幔源物质,为金矿的形成提供了物质基础。岩浆期岩浆富水、富碱质,具相对氧化的结晶环境,Ring neodymium magnet利于金的运移;晚期热液蚀变作用处于相对还原的结晶环境,利于金的沉淀。因此,孙庄杂岩体可能是义兴寨金矿床的成矿母岩。
学位年度:2009

铒镱共掺光纤放大器的研究

题名:铒镱共掺光纤放大器的研究
作者:王海东
学位授予单位:西安电子科技大学
关键词:铒镱共掺;;增益;;双包层光纤;;噪声系数
摘要:

 光纤放大器是实现全光型光纤通信的关键性部件,目前掺铒光纤放大器已经广泛应用了。但是掺铒光纤在经过短光纤时候不能提供更大的泵Cylinder neodymium magnet浦吸收,并且结构复杂、效率也低。铒镱共掺光纤是一个有效实现的方法。Yb~(3+)有更广泛的吸收频谱(800～1100 nm),同时提供大增益,对性能更优的光纤放大器的研究是发展超高速率、大容量、长距离光纤通信系统的重要组成部分,这就要求光纤放大器朝着小型化、集成化、大功率、高宽带、增益平坦的方向发展。

 本文研究铒与镱共掺杂光纤离子浓度和掺杂比例对光纤光谱性能的影响。EDF的吸收与铒离子掺杂浓度以及铒离子与镱http://www.chinamagnets.biz/的掺杂比例有关,加入镱离子可以加宽EDF的吸收带。通过研究Er~(3+)浓度、Yb~(3+)浓度、抽运光功率、光纤长度对放大器增益的影响,并与单掺铒光纤放大器进行了比较,表明共掺光纤的增益和效率明显高于单掺铒光纤。

 对Er~(3+)/Yb~(3+)共掺双包层光纤放大器进行了软件仿真和实验研究。重点对铒镱共掺光纤放大器的光纤长度、铒镱离子浓度、泵Cylinder neodymium magnet浦功率、噪声系数等做了仿真和试验研究。最后用Er~(3+)/Yb~(3+)共掺双包层光纤,泵浦源的波长为980nm,最大输出功率为2.46W。得到输出激光的波长为1550nm,最大输出功率380mW,斜率效率为35.41%。
学位年度:2009

Synthesis and Characterization of Bimetallic Coordination Compounds Based on Cyanometalate Building Blocks

Synthesis and Characterization of Bimetallic Coordination Compounds Based on Cyanometalate Building Blocks
　　Twenty two cyano-bridged compounds based on three kinds of cyanide-bearing six-coordinate complexes have been obtained and characterized by IR and ICP. Two of them have been futher characterized by single crystal X-ray diffraction.A series of cyano-bridged bimetallic compounds have been obtained by reactions of K2[Fe(phen)(CN)4]·4H2O with M(salen)Xn (M=Mn, Fe, Co, Cu), lanthanide perchloride and amine (en, dien, trien) compounds of Special shape NdFeB magnets  transition metal(Co, Cu, Ni) respectively. Among them, the compound [Mn(salen)]2[Fe(phen)(CN)4]·4H2O(1) containing 1D zigzag chain-like structure has been ditermined by single crystal X-ray diffraction. Some of them have been characterized by ICP.Four cyano-bridged bimetallic compounds based on H[Fe(phen)(CN)4]·2H2O have been synthesized and characterized by IR. http://www.999magnet.com/
One of them has been ditermined by single crystal X-ray diffraction, and reveals that it consists of 1D chain-like structures. The formula is {[Fe(phen)(CN)4]2[Co(H2O)2]·4HO}n(22).