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

来源期刊：中国有色金属学报(英文版)2003年第4期

论文作者：李涛 岳明 张久兴 王公平 肖耀福 王润

文章页码：943 - 947

Key words：spark plasma sintering; formability; shrinkage ratio; heat treatment

Abstract: 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.