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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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添加Nb对Nd-Fe-B磁体温度稳定性的影响
, PP. 87-90
Keywords: Nd-Fe-B永磁体,温度特性,显微组织
Abstract:
对Nd15.15Fe78.11-xNbxB6.74(x=0,0.21,0.42,0.72,1.08,144)永磁体的温度特性和显微组织及两者之间的关系进行了研究.结果表明Nb可以显著降低磁体的磁通不可逆损失,但对磁体磁通可逆部分几乎没有影响;Nb在Nd-Fe-B磁体中的作用是使晶粒均匀化、规则化,导致晶粒表面层厚度r0大幅度变薄,晶粒表面的最小形核场Hn和Bloch壁的挣脱钉扎场HN增大,因而使磁体的不可逆损失降低、温度稳定性和使用温度提高.
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