Improved corrosion resistance and thermal stability of sintered Nd-Fe-B magnets with holmium substitution

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

	Improved corrosion resistance and thermal stability of sintered Nd-Fe-B magnets with holmium substitution
	Chen, Kan; Ding, Guangfei; Yi, Pengpeng; Chen, Ling; Di, Jinghui; Guo, Shuai; Yan, Aru; Lee, Don; Li, Ming
刊名	JOURNAL OF RARE EARTHS
	2018
卷号	36 期号:8 页码:826-831
关键词	Grain-boundary Phase Intergranular Addition Permanent-magnets Ndfeb Magnets Coercivity Microstructure Diffusion Behavior Cu
英文摘要	The effects of Ho substitution for Nd on the microstructure, corrosion resistance and thermal stability of the Nd-Fe-B magnets were investigated. The (Nd,Ho)-O phase was formed with increasing Ho substitution. The results of potentiodynamic polarization and highly accelerated stress test show improved corrosion resistance with increasing Ho substitution. The optimum mass loss 0.29 mg/cm(2) is achieved. Moreover, the average temperature coefficients for remanence and coercivity in the range of 25-150 degrees C are both closer to zero, indicating improved thermal stability. The mechanisms for the improved corrosion resistance and thermal stability are discussed in relation to the microstructure featuring the (Nd,Ho)-O phase. (C) 2018 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.
学科主题	Chemistry ; Science & Technology - Other Topics ; 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/174433/17283]
专题	2018专题
推荐引用方式 GB/T 7714	Chen, Kan,Ding, Guangfei,Yi, Pengpeng,et al. Improved corrosion resistance and thermal stability of sintered Nd-Fe-B magnets with holmium substitution[J]. JOURNAL OF RARE EARTHS,2018,36(8):826-831.
APA	Chen, Kan.,Ding, Guangfei.,Yi, Pengpeng.,Chen, Ling.,Di, Jinghui.,...&Li, Ming.(2018).Improved corrosion resistance and thermal stability of sintered Nd-Fe-B magnets with holmium substitution.JOURNAL OF RARE EARTHS,36(8),826-831.
MLA	Chen, Kan,et al."Improved corrosion resistance and thermal stability of sintered Nd-Fe-B magnets with holmium substitution".JOURNAL OF RARE EARTHS 36.8(2018):826-831.