The oxidation of a Co-15 wt% yttrium alloy in 1 atm O-2 at 600-800 degrees C

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	The oxidation of a Co-15 wt% yttrium alloy in 1 atm O-2 at 600-800 degrees C
	Niu, Y ; Li, YS ; Gesmundo, F ; Viani, F
通讯作者	Gesmundo, F()
	2000-03-01
发表期刊	INTERMETALLICS
ISSN	0966-9795
卷号	8 期号:3 页码:293-298
摘要	The oxidation of a cobalt-based alloy containing 15 wt% yttrium (Y) as well as of pure yttrium has been studied in I arm of pure oxygen at 600-800 degrees C. The alloy always corrodes faster than pure cobalt and follows the parabolic rate law only approximately, forming an external scale of cobalt oxide which in its inner section contains particles of yttrium oxide. Beneath the external scales, a region of internal oxidation of yttrium having a depth much larger than predicted using the known solubility and diffusivity of oxygen in pure cobalt is also present. This anomalous depth is attributed to enhanced oxygen diffusion in the alloy along preferential paths associated with the localized internal oxidation of yttrium. No yttrium depletion is observed in the alloy beneath the front of internal oxidation. The scaling behavior of this alloy is interpreted by taking into account the limited solubility of yttrium in cobalt and the presence of the intermetallic compound Co-17 Y-2. (C) 2000 Elsevier Science Ltd. All rights reserved.
关键词	rare-earth intermetallics oxidation corrosion
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000085404800015
出版者	ELSEVIER SCI LTD
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/110413
专题	中国科学院金属研究所
通讯作者	Gesmundo, F
作者单位	1.Univ Genoa, Dipartimento Ingn Chim & Proc, I-16129 Genoa, Italy 2.Inst Corros & Protect Met, State Key Lab Corros, Shenyang 10015, Peoples R China
推荐引用方式 GB/T 7714	Niu, Y,Li, YS,Gesmundo, F,et al. The oxidation of a Co-15 wt% yttrium alloy in 1 atm O-2 at 600-800 degrees C[J]. INTERMETALLICS,2000,8(3):293-298.
APA	Niu, Y,Li, YS,Gesmundo, F,&Viani, F.(2000).The oxidation of a Co-15 wt% yttrium alloy in 1 atm O-2 at 600-800 degrees C.INTERMETALLICS,8(3),293-298.
MLA	Niu, Y,et al."The oxidation of a Co-15 wt% yttrium alloy in 1 atm O-2 at 600-800 degrees C".INTERMETALLICS 8.3(2000):293-298.