2:17型SmCo永磁材料主要有4种类型的磁体:高温磁体、超低温度系数的磁体、辐射取向和辐射多极取向环行磁体、高电绝缘磁体.介绍了其制造方法,主要是粉末冶金(烧结)法、还原扩散法和快淬-粘结法;描述了磁体的胞状显微组织结构和成分对结构的影响;总结了其矫顽力机理,特别是高温下的矫顽力机制;并对该永磁材料的今后研究趋势作了评述.
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