Grain boundary diffusion of magnetron sputter coated heavy rare earth elements in sintered Nd-Fe-B magnet

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2018专题

	Grain boundary diffusion of magnetron sputter coated heavy rare earth elements in sintered Nd-Fe-B magnet
	Song, Zhenlun; Mao, Shoudong; Zhang, Lijiao; Wattoo, Abdul Ghafar; Yang, Lijing; Ding, Xuefeng; Li, Weidong; Zhang, Qingke; Wu, Binghui
刊名	JOURNAL OF APPLIED PHYSICS
	2018
卷号	123 期号:24
关键词	Electrophoretic Deposition Coercivity Enhancement Microstructure Analysis Vapor Sorption Tbf3 Diffusion Ndfeb Magnets Dy Temperature Mechanism Pr
英文摘要	The diffusion of Tb or Dy heavy rare earth elements (HREEs) coated on sintered Nd-Fe-B magnets by a direct current (DC) magnetron sputtering and its influences on microstructure, magnetic properties and electrochemical properties of the magnets were investigated. The results reveal that the HREE diffuses into the magnet and substitutes some of the Nd to form a (Nd1-xHREEx)(2)Fe14B shell. The HREE concentration along the direction perpendicular to the sputtered coating surface shows a dual-trend distribution, which was considered to be induced by a fast diffusion in the grain boundary phase and a slow diffusion in the grain phase. The diffusion of DC magnetron sputtered metallic Tb or Dy shows higher efficiency of HREE consumption and greater gain of the coercivity compared with diffusion sources prepared by some other coating methods or consisted of HREE compounds. The coercivity increases from 14.6 kOe for a 5 mm thick original specimen to 24.0 kOe and 19.5 kOe for the Tb and Dy diffused specimens when the coating thickness on a double surface of the specimen is about 12.0 mu m. The HREE-diffused magnets also show better corrosion resistance. Published by AIP Publishing.
学科主题	Materials Science ; Physics
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17376]
专题	2018专题
推荐引用方式 GB/T 7714	Song, Zhenlun,Mao, Shoudong,Zhang, Lijiao,et al. Grain boundary diffusion of magnetron sputter coated heavy rare earth elements in sintered Nd-Fe-B magnet[J]. JOURNAL OF APPLIED PHYSICS,2018,123(24).
APA	Song, Zhenlun.,Mao, Shoudong.,Zhang, Lijiao.,Wattoo, Abdul Ghafar.,Yang, Lijing.,...&Wu, Binghui.(2018).Grain boundary diffusion of magnetron sputter coated heavy rare earth elements in sintered Nd-Fe-B magnet.JOURNAL OF APPLIED PHYSICS,123(24).
MLA	Song, Zhenlun,et al."Grain boundary diffusion of magnetron sputter coated heavy rare earth elements in sintered Nd-Fe-B magnet".JOURNAL OF APPLIED PHYSICS 123.24(2018).