The third-element effect in the oxidation of Ni-xCr-7Al (x=0, 5, 10 15 at.%) alloys in 1 atm O-2 at 900-1000 degrees C
文献类型：期刊论文
| 作者 | Y. Niu ; X. J. Zhang ; Y. Wu ; F. Gesmundo |
| 刊名 | Corrosion Science
 |
| 出版日期 | 2006 |
| 卷号 | 48期号:12页码:4020-4036 |
| 关键词 | ternary alloys Ni-Cr-Al oxidation third-element effect cr-al alloys most-reactive component high oxidant pressures internal oxidation ternary alloys external oxidation high-temperature protective scales aluminum alloys binary-alloys |
| ISSN号 | 0010-938X |
| 中文摘要 | The oxidation in 1 atm of pure oxygen of Ni-Cr-Al alloys with a constant aluminum content of 7 at.% and containing 5, 10 and 15 at.% Cr was studied at 900 and 1000 degrees C and compared to the behavior of the corresponding binary Ni Al alloy (Ni-7Al). A dense external scale of NiO overlying a zone of internal oxide precipitates formed on Ni-7Al and Ni-5Cr-7Al at both temperatures. Conversely, an external Al2O3 layer formed on Ni-10Cr-7Al at both temperatures and on Ni-15Cr-7Al at 900 degrees C, while the scales grown initially on Ni-15Cr-7Al at 1000 degrees C were more complex, but eventually developed an innermost protective alumina layer. Thus, the addition of sufficient chromium levels to Ni-7Al produced a classical third-element effect, inducing the transition between internal and external oxidation of aluminum. This effect is interpreted on the basis of an extension to ternary alloys of a criterion first proposed by Wagner for the transition between internal and external oxidation of the most reactive component in binary alloys. (c) 2006 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34414]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Y. Niu,X. J. Zhang,Y. Wu,et al. The third-element effect in the oxidation of Ni-xCr-7Al (x=0, 5, 10 15 at.%) alloys in 1 atm O-2 at 900-1000 degrees C[J]. Corrosion Science,2006,48(12):4020-4036. |
| APA | Y. Niu,X. J. Zhang,Y. Wu,&F. Gesmundo.(2006).The third-element effect in the oxidation of Ni-xCr-7Al (x=0, 5, 10 15 at.%) alloys in 1 atm O-2 at 900-1000 degrees C.Corrosion Science,48(12),4020-4036. |
| MLA | Y. Niu,et al."The third-element effect in the oxidation of Ni-xCr-7Al (x=0, 5, 10 15 at.%) alloys in 1 atm O-2 at 900-1000 degrees C".Corrosion Science 48.12(2006):4020-4036. |
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来源：金属研究所
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