rare earths; hydrogen decrepitation; NdFeB; permanent m

作者:张正义;肖耀福;裘宝琴;董明;
关键词:NdFeB bonded magnets;;Magnetic properties;;HDDR process
单位:University of Science and Technology Beijing Beijing 100083,China,University of Science and Technology Beijing,Ball Neodymium Magnets
http://www.chinamagnets.biz/Neodymium/Ball-Neodymium-Magnets.php Beijing 100083,China,University of Science and Technology Beijing,Beijing 100083,China,University of Science and Technology Beijing,Beijing 100083,China,
摘要:<正> The present paper describes the effect of alloy composition,homogenization anddehy-drogenization procedures on magnetic properties of NdFeB type of HDDR powders and the bondedmagnet.The results showed that the powders prepared by HDDR process possesses useful magnetic proper-ties and a better thermal stability than the sintered NdFeB magnet does.


作者:刘丽敏,李长江,张国忠
关键词:Rare earths, Rare earth permanent magnet, Pulse laser, Laser drilling
摘要:ＳｔｕｄｙｏｎＬａｓｅｒＤｒｉｌｉｎｇｉｎＲａｒｅＥａｒｔｈＭａｇｎｅｔｓＬｉｕＬｉｍｉｎ（刘丽敏），ＬｉＣｈａｎｇｊｉａｎｇ（李长江）（ＢｅｉｊｉｎｇＵｎｉｖｅｒｓｉｔｙｏｆＣｈｅｍｉｃａｌＴｅｃｈｎｏｌｏｇｙ，Ｂｅｉｊｉｎｇ１０００２９，Ｃｈｉｎ...


作者:姜忠良









,陈秀云









,陈晓东









,石大立









,杨昌平









,朱静
关键词:rare earths; hydrogen decrepitation; NdFeB; permanent magnet
摘要:The effect of Hydrogen Decrepitation (HD) process on the magnetic properties and microstructure of sintered NdFeAlB magnet (HD magnet) was investigated. The results show that the coercivity of HD magnet is higher than that of traditional ball milling (BM) magnet, while the remanence and the maximum energy product of HD magnet are lower. Microstructure analysis shows that some fine un  sintered powders are distributed at the grain boundaries of HD magnet. X  ray diffraction (XRD) analysis reveals that the degree of easy axis alignment of HD magnet is lower. Some ideas to improve the current HD process were proposed.