Nd-Fe-B magnet;;microstructure;;coercivity

作者:陈钟敏;王纳新;宋晓平;王笑天;
关键词:Nd-Fe-B magnet;;microstructure;;coercivity
单位:Department of Materials Science and Engineering Xi'an

Jiaotong University,Xi'an 710049,PRC,Neodymium Magnets
http://www.999magnet.com/products/110-sintered-neodymium-magnets Department of Materials

Science and Engineering,Xi'an Jiaotong University,Xi'an

710049,PRC,Department of Materials Science and Engineering,Xi'an

Jiaotong University,Xi'an 710049,PRC,Department of Materials

Science and Engineering,Xi'an Jiaotong University,Xi'an

710049,PRC,
摘要:<正> 1 IntroductionIt is well known that the microstructure

of Nd-Fe-B sintered magnets is primarilycomposed of a Nd_2Fe_

(14)B matrix,an intergranular Nd-rich phase and a small amount of

aB-rich phase.Additional phases may exist in the magnets due to

the introduction of oxy-gen in the process' of producing

magnets.Several researchers have reported some evi-dence about

the existence of the additional phases in the magnets and

supposed them tocontribute to coercivity by pinning the domain

walls in magnetization reversal.To getmore information about the

additional phases,we systematically studied the microstructure