Effect of Fast Neutron Irradiation on Sintered NdFeB Magnets

摘要：

　　The effects of fast neutron irradiation with fluence of 1.6±0.16×1013n/cm2 on the magnetic flux of sintered Nd-Fe-B magnet have been investigated.Nd-Fe-B magnets with coercivity Hcj 1076 kA/m(N52)and 1653 kA/m(45SH)were used as samples,whose permeance coefficient Pc was 0.5.The magnetic flux decreased remarkably for N52 magnet,magnetic flux loss up to 8.0-9.5%,while the flux loss of 45SH was below 0.1%.After remagnetization of irradiated samples,the magnetic flux almost recovered to the original strength.The phase structure of the magnet was not transformed after the irradiation.Increase the coercivity led to enhancement of the resistance to radiation-induced damage.And the irradiation mechanism is discussed at the end of the paper.

关键词： sintered Nd-Fe-B magnet fast neutron irradiation magnetic flux loss irradiation mechanism

作者: Chen Jie Liu Tao Zhou Lei Yu Xiaojun Zhang Ming

作者单位: Advanced Technology & Materials Co.,Ltd.,Beijing,China Southwest Institute of Applied Magnetics,Beijing,China

会议类型: 国际会议

会议名称: 2018世界粉末冶金大会

会议地点: 北京

会议语种:英文

页码: 1398-1402

在线出版日期: 2018-09-16（万方平台首次上网日期，不代表论文的发表时间）