The oxidation of three Ni-6Si-xAl alloys in 1 atm O-2 at 1000 degrees C

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	The oxidation of three Ni-6Si-xAl alloys in 1 atm O-2 at 1000 degrees C
	Y. Niu; Y. Wu; F. Gesmundo
	2006
发表期刊	Corrosion Science
ISSN	0010-938X
卷号	48 期号:1 页码:40930
摘要	The oxidation of three ternary Ni-6Si-xAl alloys containing 6, 10 and 15 at.% Al and of the corresponding binary Ni-Al alloys has been studied at 1000 degrees C under 1 atm O-2 to examine the effect of different Al additions on the behavior of ternary Ni-Al-Si alloys containing 6 at.% Si. Of the three binary Ni-Al alloys only Ni-15Al was able to form external alumina scales. Conversely, all the three ternary alloys formed an innermost layer of alumina directly in contact with the alloy following very similar and approximately parabolic kinetics after a short faster initial stage due to transient formation of NiO. Thus, the presence of silicon is very effective to reduce the critical Al content needed to form exclusive alumina scales with respect to binary Ni-Al alloys. The third-element effect due to silicon is interpreted on the basis of an extension of Wagner's criterion for the transition from the internal to the external oxidation of the most reactive component in binary alloys. (C) 2005 Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, acad sinica, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. univ genoa, dichep, i-16129 genoa, italy.;niu, y (reprint author), chinese acad sci, acad sinica, inst met res, state key lab corros & protect, wencui rd 62, shenyang 110016, peoples r china;ymu@imr.ac.cn
关键词	Ternary Alloys Ni-si-al Oxidation Silicon Effect Most-reactive Component Low Oxidant Pressures Ni-al Alloys Coupled Internal Oxidation High-temperature Oxidation Nickel-aluminum Alloys 2-phase Binary-alloys Ternary Alloys External Scale Si Alloys
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WOS记录号	WOS:000234618800001
引用统计	被引频次：27[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/321006/34413
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Niu,Y. Wu,F. Gesmundo. The oxidation of three Ni-6Si-xAl alloys in 1 atm O-2 at 1000 degrees C[J]. Corrosion Science,2006,48(1):40930.
APA	Y. Niu,Y. Wu,&F. Gesmundo.(2006).The oxidation of three Ni-6Si-xAl alloys in 1 atm O-2 at 1000 degrees C.Corrosion Science,48(1),40930.
MLA	Y. Niu,et al."The oxidation of three Ni-6Si-xAl alloys in 1 atm O-2 at 1000 degrees C".Corrosion Science 48.1(2006):40930.