放电等离子烧结NdFeB永磁材料的矫顽力研究

功能材料, 2004, 35(z1): 613-616.

1.北京工业大学,新型功能材料教育部重点实验室,北京,100022

2.北京工业大学,新型功能材料教育部重点实验室,北京,100022

3.北京工业大学,新型功能材料教育部重点实验室,北京,100022

基金项目: 北京市科技新星计划项目(2003B03) 北京市教委科技发展计划项目(Km200310005019)

Study on coercivity of NdFeB permanent magnetic materials sintered by spark plasma sintering

利用VSM,对放电等离子烧结NdFeB磁体磁化和退磁过程及不同磁化场下的约化矫顽力与外场角度关系进行了研究,发现样品在外场作用下,磁畴壁被钉扎的特征;利用SEM的电子能谱研究了热处理过程对样品矫顽力的影响.结果表明:SPS NdFeB的矫顽力机制属于钉扎类型.

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