The internal oxidation of ternary alloys. VII: The transition from the internal to the external oxidation of the two most-reactive components under intermediate oxidant pressures

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	The internal oxidation of ternary alloys. VII: The transition from the internal to the external oxidation of the two most-reactive components under intermediate oxidant pressures
	F. Gesmundo; Y. Niu
	2006
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	66 期号:1-2 页码:69-89
摘要	The conditions for the transition between the coupled internal oxidation of two most-reactive components and the formation of external scales in the scaling of ternary alloys under oxidant pressures below the stability of the oxide of the most-noble component, denoted as a situation of intermediate oxidant pressures, are examined under a number of simplifying conditions which allow to develop an approximate analytical treatment. If the precipitation of the two oxides occurs at the same front of internal oxidation, the kinetics of internal oxidation as well as the critical B and C contents needed for the transition have a single solution under fixed conditions of all the parameters involved. Oil the contrary, in the presence of two different fronts, when the most-stable oxide forms at the innermost front, a whole range of possible solutions is predicted. In both cases, the critical-C content needed to avoid the simultaneous internal oxidation of B plus C is progressively reduced by the addition of B. This behavior provides the basis for a possible interpretation of the "third-element effect". However, the existence and the magnitude of this effect are complicated by the occurrence of other modes of oxidation for these systems. Thus, a general treatment of the third-element effect under intermediate oxidant pressures requires an exhaustive analysis of all the oxidation modes permitted for ternary alloys under these conditions.
部门归属	chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. dipartimento ingn chim & proc, i-16129 genoa, italy.;gesmundo, f (reprint author), chinese acad sci, inst met res, state key lab corros & protect, wencui rd 62, shenyang 110016, peoples r china;yniu@imr.ac.cn
关键词	Ternary Alloys Single Oxidant Internal Oxidation Low Oxidant Pressures Degrees c Diffusion Kinetics Scale Aluminum Nickel
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WOS记录号	WOS:000241896400004
引用统计	被引频次：14[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/321006/34219
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. Gesmundo,Y. Niu. The internal oxidation of ternary alloys. VII: The transition from the internal to the external oxidation of the two most-reactive components under intermediate oxidant pressures[J]. Oxidation of Metals,2006,66(1-2):69-89.
APA	F. Gesmundo,&Y. Niu.(2006).The internal oxidation of ternary alloys. VII: The transition from the internal to the external oxidation of the two most-reactive components under intermediate oxidant pressures.Oxidation of Metals,66(1-2),69-89.
MLA	F. Gesmundo,et al."The internal oxidation of ternary alloys. VII: The transition from the internal to the external oxidation of the two most-reactive components under intermediate oxidant pressures".Oxidation of Metals 66.1-2(2006):69-89.