摘要
本文采用了真空多弧离子镀的方法在烧结钕铁硼磁体表面沉积Tb金属薄膜,并对镀膜磁体进行真空热处理,使表面的Tb金属向磁体内部晶界扩散,研究经过金属Tb晶界扩散处理的磁体的磁性和耐温性。结果表明,经过晶界扩散处理,金属Tb进入了距离钕铁硼磁体表层一定深度范围内的晶界中,磁体的内禀矫顽力Hcj提高了9000～10000Oe,磁体的高温不可逆磁损失大幅降低,磁体的内禀矫顽力和耐温性能显著提高。
In this paper, Tb thin film was deposited on the surface of sintered NdFeB magnets by the method of vacuum multiarc ion plating, and then a vacuum heat treatment was applied in the samples. Tb was introduced from the surface into the interior of the magnets by grain boundary diffusion(GBD), and the magnetic performance and heat resistance of the magnets was studied at last. The results show that after grain boundary diffusion treatment, the metal Tb enters the grain boundary within a certain depth range from the surface of the NdFeB magnet, resulting in the increasing of intrinsic coercivity of the magnets by9000-10000 Oe, and great reduction of high temperature hirr of the magnets. The intrinsic coercivity and heat resistance of the magnets were significantly improved.
作者
段永利
邓文宇
齐丽君
刘坤
孙宝玉
王庆
DUAN Yong-li;Deng Wen-yu;QI Li-jun;LIU Kun;SUN Bao-yu;WANG Qing(Shenyang General Magnetic Co.,Ltd.,Shenyang 110168,China;School of Mechanical Engineering and Automation,Northeastern university,Shenyang 110819,China)
出处
《真空》
CAS
2018年第6期76-79,共4页
Vacuum
基金
2018年辽宁省产业专业技术创新平台项目
关键词
Tb金属薄膜
晶界扩散
烧结钕铁硼
耐温性
真空多弧离子镀
Tb thin film
grain boundary diffusion
sintered NdFeB
heat resistance
vacuum multi-arc ionplating
