Promotion of crystallization and magnetic property improvement enhancement of the energy product in Nd5.5Fe66B18.5Cr5Co5 by magnetic field heat treatment

被引：22

作者：

Zhao, TM ^{[1
]}

Hao, YY ^{[1
]}

Xu, XR ^{[1
]}

Yang, YS ^{[1
]}

Hu, ZQ ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, State Key Lab RSA, Shenyang 110015, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 1999年 / 85卷 / 01期

关键词：

D O I：

10.1063/1.369482

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An externally applied magnetic field during heat treatment of a melt spun Nd5.5Fe66B18.5Cr5Co5 alloy can promote its crystallization from amorphous state and induce a grain refinement. The stronger the applied magnetic field, the lower the crystallization temperature. Holding the annealing time for 5 min, the crystallization occurs at 680 degrees C in conventional heat treatment, however, it happens at 650 degrees C when annealed with a 0.15 T field strength and 630 degrees C with a 0.25 T field strength. The maximum energy product for Nd-5.5 Fe66B18.5Cr5Co5 powder under optimum heat treatment with an applied magnetic field can increase about 17% because of the enhancement of exchange coupling role between the soft and hard phase due to the full crystallization and the grain size reduction. (C) 1999 American Institute of Physics. [S0021-8979(99)09901-6].

引用

页码：518 / 521

页数：4

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