摘要
本文主要研究了时效对ＮｄＦｅＢ烧结磁体的矫顽力和显微组织的影响。结果表明，６００℃左右的时效可显著提高烧结ＮｄＦｅＢ磁体的矫顽力。原因在于：①时效使主相晶界平直、规整，从而使反磁化畴难以形核。②晶界中的微粒相数量增多，强化了对晶界的钉扎。正是这两种因素的共同作用使得时效后磁体的矫顽力提高了。
The effects of annealing on coercivity and microstructure were studied.It was found that annealing at 600℃ could remarkably enhance coercivity of NdFeB sintered magnets. The structural examinations revealed that annealing made the thin layer existing between main phase and Nd-rich phase in sintered magnets disappear.Therefore,the grain boundaries became clean and even,and antimagnetic domain conld not form.
出处
《稀土》
EI
CAS
CSCD
北大核心
1997年第6期30-33,共4页
Chinese Rare Earths
