Y和Zr掺杂对CeFeB合金微观结构和磁性能的影响  

Effects of Y and Zr Doping on Microstructure and Magnetic Properties for CeFeB Alloy

作　　者：周艳霞 李伟 符小坤 侯育花[1] 黄有林[1] Zhou Yanxia;Li Wei;Fu Xiaokun;Hou Yuhua;Huang Youlin(School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《稀有金属材料与工程》2021年第9期3139-3143,共5页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China (51961027, 51564037, 51401103);Key Research and Development Program of Jiangxi Province(20181ACE50005, 20192ACB50020)

摘　　要：研究了Y和Zr掺杂对CeFeB合金相组成、磁性能和温度稳定性的影响。结果表明,CeYFeB合金由2:14:1主相和少量α-Fe相组成。Y掺杂可有效提高合金的矫顽力、剩磁和最大磁能积。同时由于Y_(2)Fe_(14)B相优异的磁性能与高温稳定性,其温度稳定性也得到明显改善,掺杂后合金的剩磁和矫顽力温度系数分别为-0.32%/K和-0.41%/K,与纯CeFeB合金相比分别提高了38.5%和40.6%。Y和Zr共掺杂后,由于增加的磁晶各向异性场和晶粒尺寸细化所产生的联合效应,合金的矫顽力、剩磁和最大磁能积大幅度提高,分别比纯CeFeB合金提高了30.9%、58.1%和204.8%。Effects of Y and Zr doping on the phase constituent,magnetic properties,and temperature stability for CeFeB alloy were investigated.The results show that CeYFeB alloy consists of the 2:14:1 main phase and a small amount ofα-Fe phase.Magnetic properties including coercivity,remanence,and magnetic product energy improve considerably after Y doping.Meanwhile,the temperature stability is enhanced significantly.Due to the excellent intrinsic magnetic properties and higher temperature stability of Y_(2)Fe_(14)B phase,the remanence and coercivity temperature coefficients are-0.32%/K and-0.41%/K,increasing by 38.5%and 40.6%,respectively,compared to those of the pure CeFeB alloy.After the Y and Zr co-doping,the coercivity,remanence,and magnetic product energy improve greatly,increasing by 30.9%,58.1%,and 204.8%,respectively,compared to those of pure CeFeB alloy,because of the joint effects of enhanced magnet crystalline anisotropic field and refined grain size.

关 键 词：CeFeB合金 Y掺杂 Zr掺杂 磁性能 

分 类 号：TG113[金属学及工艺—物理冶金]