The internal oxidation of two-phase binary alloys beneath an external scale of the less-stable oxide

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	The internal oxidation of two-phase binary alloys beneath an external scale of the less-stable oxide
	F. Gesmundo; F. Viani; Y. Niu
	1997
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	47 期号:3-4 页码:355-380
摘要	The internal oxidation of two-phase binary A-B alloys by a single oxidant at high temperatures, under partial pressures sufficient to also form external scales of the less-stable oxide, is examined by means of quantitative models and compared with the corresponding behavior of single-phase alloys. It is shown that, depending on various factors, particularly on the solubility and diffusivity of the most-reactive component B in the most-noble component A, this process may or may not involve a diffusion process of the alloy components, leading to different scale morphologies. It is also concluded that even when the solubility and diffusivity of B in A are sufficiently high, so that the internal oxidation of the common type occurs, the restriction to the diffusion of B in the alloy due to its limited solubility affects the kinetics of internal oxidation, producing an inn ease of the rate of internal oxidation and of the critical concentration of B in the alloy required for the transition to the external oxidation of B with respect to single-phase alloys under the same values of all the relevant parameters. The lower the solubility of B in A, the larger these effects.
部门归属	inst corros & protect met,state key lab corros & protect,shenyang 110015,peoples r china.;gesmundo, f (reprint author), univ genoa,fac ingn,ist chim,fiera mare,pad d,i-16129 genoa,italy
关键词	Internal Oxidation Binary Alloys Two-phase Alloys High-temperature Oxidation Most-reactive Component 2-phase Alloys Transition Pressures Corrosion Modes
URL	查看原文
WOS记录号	WOS:A1997WL46800009
引用统计	被引频次：63[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/321006/37959
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. Gesmundo,F. Viani,Y. Niu. The internal oxidation of two-phase binary alloys beneath an external scale of the less-stable oxide[J]. Oxidation of Metals,1997,47(3-4):355-380.
APA	F. Gesmundo,F. Viani,&Y. Niu.(1997).The internal oxidation of two-phase binary alloys beneath an external scale of the less-stable oxide.Oxidation of Metals,47(3-4),355-380.
MLA	F. Gesmundo,et al."The internal oxidation of two-phase binary alloys beneath an external scale of the less-stable oxide".Oxidation of Metals 47.3-4(1997):355-380.