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材料研究学报  2007, Vol. 21 Issue (6): 580-584    
  论文 本期目录 | 过刊浏览 |
SmCo_7块状纳米晶烧结磁体的制备和性能
张东涛;潘利军;岳明;张久兴
北京工业大学新型功能材料教育部重点实验室 北京100022
引用本文:

张东涛;潘利军;岳明;张久兴. SmCo_7块状纳米晶烧结磁体的制备和性能[J]. 材料研究学报, 2007, 21(6): 580-584.

全文: PDF(636 KB)  
摘要: 采用放电等离子烧结技术制备了致密纳米晶SmCo_(6.6)Nb_(0.4)烧结磁体,研究了磁体的结构和磁性能,结果表明,烧结磁体具有TbCu_7结构,说明通过SPS过程可以获得稳定的1:7相;磁体由平均晶粒尺寸约为30 nm的1:7相构成,磁体的室温矫顽力高达2.8 T,而剩磁比高达0.74,说明在纳米晶之间存在强烈的晶间交换耦合作用.烧结磁体具有良好的高温性能,773 K时的矫顽力为0.48 T,矫顽力温度系数β为-0.169%/K.
关键词 金属材料SmCo烧结磁体SPS磁性能    
Key words
收稿日期: 1900-01-01     
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