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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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烧结NdFeB永磁合金的边界显微结构与磁硬化
, PP. 148-152
Keywords: NdFeB永磁,显微组织,矫顽力
Abstract:
用TEM观察了烧结NdFeB永磁合金的内边界显微结构,发现该合金存在4种类型的边界。回火前后前三类边界的形貌没有变化,而第4类边界的显微结构发生了显著的变化。用SAED和AES分析了第4类边界的成分与结构,该边界由两个区域组成,即富Nd相区和Nd_2Fe_(14)B晶粒的外延层。回火时,由于原子的扩散和物质迁移,Nd_2Fe_(14)B晶粒的外延层发生了磁硬化,因而合金的矫顽力得到提高。
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