Coercivity enhancement in anisotropic Pr13Fe79.4B7Nb0.3Ga0.3 powders
Coercivity enhancement in anisotropic Pr13Fe79.4B7Nb0.3Ga0.3 powders
复制标题
各向异性 Pr13Fe79.4B7Nb0.3Ga0.3 粉末的矫顽力增强
DOI：
10.1063/1.3677664
复制
发表时间：
2012-03
影响因子：
3.2
通讯作者：
Yang, Yingchang
中科院分区：
文献类型：
--
作者：
Lin, Zhong;Han, Jingzhi;Liu, Shunquan;Xing, Meiying;Zhang, Yan;Wang, Changsheng;Yang, Jinbo;Yang, Yingchang
通过改进的加氢歧化解吸复合（HDDR）工艺获得了高各向异性的Pr13Fe79.4B7Nb0.3Ga0.3粉末，其剩余磁化强度为1.4 T，内禀矫顽力为10 kOe，最大磁能积为32 MGOe。研究发现自组织棒状歧化微观结构有助于各向异性（晶体织构）的形成。为了进一步提高矫顽力，将HDDR处理的粉末与Pr68Cu32粉末混合，然后在真空中加热。结果，HDDR粉末的矫顽力从10 kOe提高到14 kOe。显微组织研究表明，热处理后晶界相变厚，且富含Pr和Cu元素。改性晶界层可以使Pr2Fe14B晶粒间产生更强的磁退耦效应，有利于矫顽力的增强。
Highly anisotropic Pr13Fe79.4B7Nb0.3Ga0.3 powders with a residual magnetization of 1.4 T, an intrinsic coercivity of 10 kOe, and a maximum energy product of 32 MGOe were obtained by a modified hydrogenation disproportionation desorption recombination (HDDR) process. It was found that self-organized rod-like disproprotionation microstructure is helpful for the formation of anisotropy (the crystal texture). To further improve the coercivity, the HDDR treated powders were mixed with Pr68Cu32 powders and then were heated in vacuum. As a result, the coercivity of the HDDR powders was enhanced from 10 kOe to 14 kOe. Microstructure investigations show that after heat treatment, the grain-boundary phase becomes thicker and is rich in Pr and Cu elements. The modified grain-boundary layer may cause a stronger magnetic decoupling effect among Pr2Fe14B grains and is helpful for the enhancement of coercivity.
登录
查看更多内容
影响因子：
2.7
作者：
N. Cannesan;D. Brown;A. Williams;I. R. Harris
通讯作者：
N. Cannesan;D. Brown;A. Williams;I. R. Harris
影响因子：
2.1
作者：
C. Mishima;N. Hamada;H. Mitarai;Y. Honkura
通讯作者：
C. Mishima;N. Hamada;H. Mitarai;Y. Honkura
影响因子：
3.2
作者：
Yoon-Bae Kim;W. Jeung
通讯作者：
Yoon-Bae Kim;W. Jeung
影响因子：
6
作者：
Zhong Lin;Jingzhi Han;Jinbo Yang;Xiangpeng Kong;X. Zhong;Shunquan Liu;Xiaodong Zhang;Changsheng Wang-C
通讯作者：
Zhong Lin;Jingzhi Han;Jinbo Yang;Xiangpeng Kong;X. Zhong;Shunquan Liu;Xiaodong Zhang;Changsheng Wang-C
影响因子：
3.2
作者：
Jingzhi Han;Xiangpeng Kong;Shunquan Liu;Zhong Lin;Changsheng Wang;H. Du;Jinbo Yang;Yingchang Yang-Ying
通讯作者：
Jingzhi Han;Xiangpeng Kong;Shunquan Liu;Zhong Lin;Changsheng Wang;H. Du;Jinbo Yang;Yingchang Yang-Ying