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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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smco_7块状纳米晶烧结磁体的制备和性能
Keywords: 金属材料,smco,烧结磁体,sps,磁性能
Abstract:
？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30nm的1:7相构成,磁体的室温矫顽力高达2.8t,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,773k时的矫顽力为0.48t,矫顽力温度系数β为-0.169%/k.
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