摘要
主要研究了在烧结ＮｄＦｅＢ磁体的晶界添加Ｗ对显微组织和磁性能的影响。实验结果表明，随Ｗ添加量的增大，晶粒逐渐细化，剩磁稍有下降，而矫顽力逐渐升高。在含Ｗ为１％ｗｔ时，矫顽力达到峰值。扫描电镜的观察显示，加Ｗ磁体中在晶界区生成许多杆状相。能谱和Ｘ射线衍射分析均表明此相为ＷＦｅＢ化合物。
The addition of W to the intergranular region of NdFeB sintered magnets was found to bring a substantial increase in coercivity, and reductions in remanence and grain size, the highest coercivity corresponds to amount of 1% wt W addition. SEM observation revealed that new WFeB compound with colony like phase appears at grain boundaries.
出处
《功能材料》
EI
CAS
CSCD
北大核心
1997年第3期258-260,共3页
Journal of Functional Materials
