Heat treatment process of new NdFeB magnet prepared by spark plasma sintering  

作　　者：李涛 岳明 张久兴 王公平 肖耀福 王润 

机构地区：[1]School of Materials Science and Engineering [2]Beijing University of Technology

出　　处：《中国有色金属学会会刊：英文版》2003年第4期943-947,共5页Transactions of Nonferrous Metals Society of China

基　　金：Project (Km2 0 0 3 10 005019)supportedbytheScienceandTechnologyDevelopmentPlanofBeijingMunicipalEducationCom mission

摘　　要：In recent years, spark plasma sintering technique(SPS) has been a focus in the field of material preparation due to its advantages. SPS technique is first introduced for preparation of high quality NdFeB magnets. The effects of heat treatment process on the magnetic properties of SPS NdFeB magnet were investigated. Meanwhile, the effects of heat treatment process on the microstructure, tropism and dimensional precision of the SPS NdFeB magnets were also studied. The high quality NdFeB magnets with fine grains were prepared under proper heat treatment process. The results show that the magnetic properties of SPS NdFeB can be further improved through proper heat treatment process. Meanwhile, the experiment also demonstrates that it is feasible to prepare near net shape NdFeB magnets with fine grains and high magnetic property by spark plasma sintering.In recent years, spark plasma sintering technique(SPS) has been a focus in the field of material preparation due to its advantages. SPS technique is first introduced for preparation of high quality NdFeB magnets. The effects of heat treatment process on the magnetic properties of SPS NdFeB magnet were investigated. Meanwhile, the effects of heat treatment process on the microstructure, tropism and dimensional precision of the SPS NdFeB magnets were also studied. The high quality NdFeB magnets with fine grains were prepared under proper heat treatment process. The results show that the magnetic properties of SPS NdFeB can be further improved through proper heat treatment process. Meanwhile, the experiment also demonstrates that it is feasible to prepare near net shape NdFeB magnets with fine grains and high magnetic property by spark plasma sintering.

关 键 词：放电烧结 NDFEB 永磁材料 热处理 SPS 

分 类 号：TF124.8[冶金工程—粉末冶金]