真空与磁场热处理改善FeCo合金的软磁性能

毕晓; 张善庆; 朱芳镇; 徐惠彬

真空与磁场热处理改善FeCo合金的软磁性能

1.
北京航空航天大学材料科学与工程学院北京 100083
2. 北京航空材料研究院, 北京 100083

基金项目: 航空科学基金资助项目(02H51012)

详细信息

作者简介:
毕晓(1961-),女,北京人, 教授, bixf@buaa.edu.cn.

中图分类号: O 4844⁺3
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出版历程
- 收稿日期: 2004-04-28
- 网络出版日期: 2004-10-31

Improvement of soft magnetic properties of FeCo core alloy by vacuum and field annealing

1.
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. Beijing Institute of Aeronautical Materials, Beijing 100095, China

摘要

摘要: 针对发电机中转子用FeCo合金(国产牌号1J22)进行了组织结构与磁性能的研究.通过对该合金进行真空处理以及磁场热处理,研究了组织结构对软磁性能的影响规律;研究了附加磁场强度以及热处理温度对磁场处理效果的影响,并结合该合金的磁致伸缩伸缩系数的变化规律,分析了磁场热处理效果的微观机制.当合金组织为轧制态时,磁场热处理效果不明显;在合金的再结晶温度以上进行磁场热处理时,获得了显著的磁场热处理效果,矫顽力下降至72A/m(0~9Oe)以下.
- 磁场退火 /
- 磁致伸缩 /
- FeCo合金 /
- 软磁性能
Abstract: Microstructures and soft magnetic properties of FeCo alloy were investigated in an attempt to improve its soft magnetic properties. Microstructural dependence of the magnetic properties was studied by vacuum annealing at various temperatures. Magnetic field annealing was performed to study the dependence of the coerecivity on the magnetic filed applied during annealing. The field annealing effect was observed only for the alloys after recrystallization, and was increased with increasing the applied field within the range of 2.0×10⁴A/m(250Oe). Coercivity of the FeCo alloys was decreased to 72A/m(0~9Oe) after annealing with a magnetic field of 1.76×10⁴A/m(220Oe) at 850℃. The microscopic mechanism of the field annealing effect was also discussed in terms of magnetostrictive characterizations.
- magnetic field effects /
- magnetostriction /
- FeCo alloy /
- soft magnetic properties

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参考文献(1)

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