Coercivity Enhancement of HDDR Hot-Pressed Magnets by NdCu Diffusion Treatment

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	Coercivity Enhancement of HDDR Hot-Pressed Magnets by NdCu Diffusion Treatment
	Cai, Lingwen ; Guo, Shuai ; Yan, Changjiang ; Zhang, Xiaofeng ; Chen, Renjie ; Liu, Lidong ; Lee, Don ; Yan, Aru
刊名	IEEE TRANSACTIONS ON MAGNETICS
	2014
卷号	50 期号:11
中文摘要	In order to improve the coercivity of hot-pressed magnets with hydrogenation disproportionation desorption recombination (HDDR) powders being the precursor, diffusion processing of an NdCu eutectic alloy is employed for grain boundary modification, resulting in an increase of coercivity from 15.4 to 17.8 kOe, which leads to a better thermal stability with the temperature coefficient (beta) changing from -0.549%/K to -0.519%/K. It is evidently observed that Nd-rich grain boundary layers are formed between the adjacent matrix phase grains as well as in the junction parts after diffusion treatment, which is responsible for the coercivity enhancement of the HDDR hot-pressing magnets. The influence of the microstructure on the coercivity has been further investigated to reveal that the Nd-rich phases occurred during the boundary modification process of the NdCu eutectic alloy decouple the exchange interactions between the grains.
公开日期	2015-09-20
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/11688]
专题	宁波材料技术与工程研究所_2014专题
推荐引用方式 GB/T 7714	Cai, Lingwen,Guo, Shuai,Yan, Changjiang,et al. Coercivity Enhancement of HDDR Hot-Pressed Magnets by NdCu Diffusion Treatment[J]. IEEE TRANSACTIONS ON MAGNETICS,2014,50(11).
APA	Cai, Lingwen.,Guo, Shuai.,Yan, Changjiang.,Zhang, Xiaofeng.,Chen, Renjie.,...&Yan, Aru.(2014).Coercivity Enhancement of HDDR Hot-Pressed Magnets by NdCu Diffusion Treatment.IEEE TRANSACTIONS ON MAGNETICS,50(11).
MLA	Cai, Lingwen,et al."Coercivity Enhancement of HDDR Hot-Pressed Magnets by NdCu Diffusion Treatment".IEEE TRANSACTIONS ON MAGNETICS 50.11(2014).