Effect of Nb substitution on the temperature characteristics and microstructures of rapid-quenched NdFeB alloy
Effect of Nb substitution on the temperature characteristics and microstructures of rapid-quenched NdFeB alloy
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DOI：
10.1016/j.jallcom.2006.03.034
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发表时间：
2007-01
影响因子：
6.2
通讯作者：
Ran Zhang;Y. Liu;Jinwen Ye;Wenfeng Yang;Yilong Ma;Shengji Gao
中科院分区：
文献类型：
--
作者：
Ran Zhang;Y. Liu;Jinwen Ye;Wenfeng Yang;Yilong Ma;Shengji Gao
研究了Nb替代对快淬Nd11Dy0.5Fe82.4−nNbnB6.1（n= 0，0.5，1，1.5，2）永磁体磁性能、温度特性和显微组织的影响。结果表明，随着Nb含量的增加，Hcj增大，不可逆磁通损失减小。Nb的替代使晶粒变小，并导致晶粒的均匀化和规则化。Nb的替代增强了交换耦合钉扎场，降低了内部弥散磁场。结果，不可逆磁通损失显著降低，磁体可以在更高的温度下使用。Nd11Dy0.5Fe81.4Nb1B6.1合金的最高工作温度高于150°C。
Effect of Nb substitution on the magnetic properties, temperature characteristics and microstructure of rapid-quenched Nd11Dy0.5Fe82.4−nNbnB6.1(n=0, 0.5, 1, 1.5, 2) permanent magnets has been investigated. It is found that Hcjincreases with increasing Nb content and the irreversible flux loss decreases with that. Nb substitution makes grains smaller and leads to the homogenization and regularization of grains. Also Nb substitution can enhance exchange coupling pining field and reduce inner dispersal magnetic field. As a result, the irreversible flux loss decreases notably and the magnets can be used at higher temperature. The maximum operating temperature of Nd11Dy0.5Fe81.4Nb1B6.1alloy is higher than 150°C.