DIFFUSION PROCESS OF NITROGEN IN SM2FE17

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	DIFFUSION PROCESS OF NITROGEN IN SM2FE17
	HU, JF ; ZHAO, TY ; GUO, HQ ; SHEN, BG ; WANG, ZX ; LIU, GC ; WANG, KY ; WANG, YZ ; HU, BP
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	1995
卷号	222 页码:113
关键词	INTERMETALLIC COMPOUNDS PATTERNS
ISSN号	0925-8388
通讯作者	HU, JF: CHINESE ACAD SCI,INST PHYS,BEIJING 100080,PEOPLES R CHINA.
中文摘要	In the present paper the diffusion behavior of nitrogen in Sm2Fe17 has been investigated. The Curie temperatures of nitrides are experimentally found to vary in a very narrow temperature range. No other intermediate nitride with a small Curie temperature has been found. After the further annealing of non-fully nitrided powder in an Ar atmosphere, some of the nitrogen atoms, which have weak interactions with the interstitial site, can be excited from interstitial sites of Sm2Fe17 molecule by thermal energy and migrate again. However, some of nitrogen atoms are still located at interstitial sites of Sm2Fe17 molecule owing to the strong interaction between gas atoms and the interstitial site. In the nitrogen diffusion process, with increasing occupation of the interstitial site in Sm2Fe17 by nitrogen atoms, the diffuse force for nitrogen atom decreases owing to the change in the chemical potential of system, which results in different diffusive activities of nitrogen atoms under different nitrogen, absorption contents x in Sm2Fe17Nx. Meanwhile the particle size dependence of the diffusion behavior has also been discussed. The surface and the grain boundary diffusion modes play important roles in the diffusion process of nitrogen atoms into Sm2Fe17 particles especially for small particles.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/35962]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	HU, JF,ZHAO, TY,GUO, HQ,et al. DIFFUSION PROCESS OF NITROGEN IN SM2FE17[J]. JOURNAL OF ALLOYS AND COMPOUNDS,1995,222:113.
APA	HU, JF.,ZHAO, TY.,GUO, HQ.,SHEN, BG.,WANG, ZX.,...&HU, BP.(1995).DIFFUSION PROCESS OF NITROGEN IN SM2FE17.JOURNAL OF ALLOYS AND COMPOUNDS,222,113.
MLA	HU, JF,et al."DIFFUSION PROCESS OF NITROGEN IN SM2FE17".JOURNAL OF ALLOYS AND COMPOUNDS 222(1995):113.