放电等离子烧结Nd-Fe-B过程特征  

The Process Characteristics of Nd-Fe-B Magnet by Spark Plasma Sintering

作　　者：徐峰[1] 潘晶[1] 刘新才[1] 

机构地区：[1]宁波大学材料科学与化学工程学院

出　　处：《热处理技术与装备》2008年第4期14-15,26,共3页Heat Treatment Technology and Equipment

基　　金：国家重大基础研究前期专项(2004CCA04000);国家自然基金(50744014);凝固技术国家重点实验室开放基金;浙江省自然科学基金(Y406389);宁波市科技攻关项目(2006B100054)

摘　　要：研究了不同烧结温度下,放电等离子烧结的Nd-Fe-B永磁体在烧结过程中样品收缩量随温度的变化,讨论了提高样品密度的措施。放电等离子烧结的Nd-Fe-B永磁体晶粒细小且均匀,晶粒平均尺寸为3.8μm,为一般传统粉末烧结制备Nd-Fe-B磁体晶粒尺寸的1/4。Relations between the shrinkage of specimens and temperature are researched for Nd-Fe-B magnet by spark plasma sintering at different temperatures during the sintering. The measurement improving the density of specimens is discussed. The average grain size of Nd-Fe-B magnet by SPS is fine and uniform, the diameter is about 3.8 μm and 1/4 of that by conventional powder mothod.

关 键 词：放电等离子烧结 微观结构 Nd—Fe—B 

分 类 号：TF124.5[冶金工程—粉末冶金]