摘要
对烧结与粘结NdFeB、烧结SmCo5及其经化学镀Ni-P处理后的稀土烧结永磁体进行了γ辐照效应和磁性能测试研究。累积照射剂量大约为 2 .5× 10 5Gy时 ,这些永磁体的表面磁场仍无明显变化 ,即无不良影响。说明不论是烧结还是粘结稀土永磁体均具有一定的抗γ辐照能力。对这种效应的机理进行了探讨。
The effect of radiation from a γ-source on the magnetic properties of sintered NdFeB,SmCo 5,bonded NdFeB and their electroless Ni-P alloy coating has been measured.Up to an accumulated dose of 25×10 4Gy, the surface magnetic strength for those permanent magnets are not affected significantly.As a consequence,both sintered and bonded rare-earth magnets possess the ability of radiation resistance.Some mechanisms for this effect were investigated and discussed.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2000年第3期250-251,共2页
Journal of Functional Materials
基金
国防预研基金资助
关键词
稀土永磁体
γ辐照效应
表面磁场
累积照射剂量
rare-earth permanent magnets
γ-radiation
surface magnetic strength
accumulated dose
