Enhanced coercivity and grain boundary chemistry in diffusion-processed Ce₁₃Fe₇₉B₈ ribbons

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• 作者：Weibin Cui^a ; ^b ; ^{cuiweibin@epm.neu.edu.cn} ; Tongbo Zhang^b ; Xiaoqian Zhou^b ; Dedong Yu^b ; Qiang Wang^b ; Xinguo Zhao^a ; Wei Liu^a ; ^{wliu@imr.ac.cn} ; Zhidong Zhang^a
• 关键词：Grain boundaries ; Interfaces ; Magnetic materials ; Functionally graded structure ; Transmission electron microscopy
• 刊名：Materials Letters
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：191
• 期：Complete
• 页码：210-213
• 全文大小：1881 K
• 卷排序：191

文摘

Core-shell microstructure realized by diffusion-process with minor Nd-based alloys. Coercivity of over 0.7 T achieved without substantially reducing remanence. Face-center-cubic crystallographic structure confirmed for Ce-rich GB phase. Compositions of core region, shell region and grain boundary phases estimated by EDS. Enhanced anisotropy due to core-shell microstructure proved by Henkel plot.