The study of microstructure changes in SmCo<sub>5</sub> magnets from room temperature to 740℃ by positron annihilation

Yuanjin He; Weizhong Yu; Jiajiong Xiong; Hongzu Xie; Minjie Cheng; Shanglan Liang

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The study of microstructure changes in SmCo₅ magnets from room temperature to 740℃ by positron annihilation

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- The study of microstructure changes in SmCo₅ magnets from room temperature to 740℃ by positron annihilation
- Nuclear Techniques Vol. 05, Issue 6, (1982)
- 作者机构：
  
  1.清华大学
  2.包头冶金研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1982-12
- 稿件说明：
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Yuanjin He, Weizhong Yu, Jiajiong Xiong, et al. The study of microstructure changes in SmCo₅ magnets from room temperature to 740℃ by positron annihilation[J]. Nuclear techniques, 1982, 05(6): 50-51.
DOI：

Yuanjin He, Weizhong Yu, Jiajiong Xiong, et al. The study of microstructure changes in SmCo₅ magnets from room temperature to 740℃ by positron annihilation[J]. Nuclear techniques, 1982, 05(6): 50-51. DOI：

摘要

SmCo

永磁合金是一种用途广泛的永磁材料，其居里点约为740℃

[1]

。为找出材料在400℃以上性能变坏的原因，尝试进行了室温至740℃温度范围内等时（2小时）退火处理的SmCo

合金的正电子湮灭研究。结果发现，材料中明显地存在着沉淀相的析出。作者认为，至少不能排除这一过程作为影响磁性的重要原因。

Abstract

The isochronal annealing process in sintered alloys SmCo

has been investigated by positron annihilation technique (PAT). It was found that the precipitation phenomena by G.P. zone formation may occur between 200℃ and 600℃

and the moving of the defects concerned with the metallurgical processes may take place at a temperature as low as about 50℃.

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references

金子秀夫，日本金属学会会报， 15 ， 2 , 109 （ 1976 ）.

M. J. Stott and P. Kubica , Phys. Rev . , B11 , 1 （ 1975 ）.

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The study of microstructure changes in SmCo5 magnets from room temperature to 740℃ by positron annihilation

DOI：

摘要

Abstract

关键词

Keywords

references

The study of microstructure changes in SmCo₅ magnets from room temperature to 740℃ by positron annihilation