单杰锋,俞能君,张素银,金向阳,吴琼,张朋越,葛洪良.MnBi/Sm2Co17复合磁粉制备、磁性能及微结构研究[J].稀有金属材料与工程,2021,50(4):1448~1454.[shanjiefeng,yunengjun,zhangsuyin,jinxiangyang,wuqiong,zhangpengyue,gehongliang.Shan Jiefeng 1, Yu Nengjun1, Zhang Suyin1, Jin Xiangyang2, Wu Qiong1, Zhang Pengyue1, Ge Hongliang1[J].Rare Metal Materials and Engineering,2021,50(4):1448~1454.]
MnBi/Sm2Co17复合磁粉制备、磁性能及微结构研究
投稿时间:2020-06-10  修订日期:2020-07-15
中文关键词:  MnBi/Sm[sub_s]2[sub_e]Co[sub_s]17[sub_e]复合材料  磁性能  微结构  交换耦合作用
基金项目:国家青年基金(51801196);国家重点研发计划,The National Key Research and Development Project ,(2019YFF0217203);国家自然科学基金 (51871205).
中文摘要:
      采用化学辅助高能球磨工艺制备了MnBi/Sm2Co17纳米晶复合磁粉,研究了MnBi合金添加量对复合磁体磁性能和微结构的影响。随着MnBi合金添加量的增加,复合磁粉的内禀矫顽力先稍上升,后基本保持不变,但均低于纯MnBi磁粉的10.8 kOe;磁粉的饱和磁化强度和剩余磁化强度均逐渐下降。复合磁粉中没有发现明显的元素互扩散现象。采用Henkel曲线分析了复合磁体的交换耦合作用,复合磁粉的δM在添加量为15wt. %时达到极大值,说明该复合磁体具有较强的交换耦合作用,结合磁粉形貌分析了随着MnBi合金添加量的增加复合磁粉剩磁比演变规律的原因。
Shan Jiefeng 1, Yu Nengjun1, Zhang Suyin1, Jin Xiangyang2, Wu Qiong1, Zhang Pengyue1, Ge Hongliang1
英文关键词:MnBi/Sm2Co17 composite material  magnetic properties  microstructure  exchange coupling
英文摘要:
      The MnBi/Sm2Co17 composite powder was prepared by chemically assisted high-energy ball milling process, and the effect of the content of MnBi alloy on the magnetic properties and microstructure of the composite powder has been studied. As the content of MnBi alloy increases, the coercivity of the composite powder first increases slightly, and then keep stable at about 8.0 kOe, while coercivity of all the composite powder was lower than 10.8 kOe of pure MnBi milled powder; the saturation magnetization and remanent magnetization of the composite powder gradually decreased. No obvious elements interdiffusion was found in the composite magnetic powder. The exchange coupling effect of the composite powder was analyzed by the Henkel curve. The δM of the composite magnetic powder reaches the maximum value when the MnBi addition amount was 15wt.%, indicating that the composite powder has a strong exchange coupling effect. The evolution of the remanence ratio of the composite magnetic powder with the increase of MnBi alloy content has been analyzed depending on the morphology and the exchange coupling effect of the composite magnetic powder.
作者单位E-mail
单杰锋 中国计量大学 839690738@qq.com 
俞能君 中国计量大学 nengjunyu@126.com 
张素银 中国计量大学  
金向阳 浙江中元磁业股份有限公司  
吴琼 中国计量大学  
张朋越 中国计量大学  
葛洪良 中国计量大学  
摘要点击次数: 93
全文下载次数: 28
查看全文  查看/发表评论    HTML
关闭