The effect of Cr on the oxidation of Ni-10 at% Al in 1 atm O-2 at 900-1000 degrees C
文献类型：期刊论文
| 作者 | X. J. Zhang ; S. Y. Wang ; F. Gesmundo ; Y. Niu |
| 刊名 | Oxidation of Metals
 |
| 出版日期 | 2006 |
| 卷号 | 65期号:3-4页码:151-165 |
| 关键词 | ternary alloys Ni-Cr-Al oxidation chromium effect aluminum alloys |
| ISSN号 | 0030-770X |
| 中文摘要 | The oxidation of three Ni - xCr - 10Al alloys with a constant Al content of 10 at% and containing 3, 5, and 10 at% Cr was investigated at 900 - 1000 degrees C in 1 atm of pure oxygen and compared to the behavior of Ni - 10Al. At both temperatures, an external NiO scale overlying a zone of internal-oxide precipitates formed on Ni - 10Al and Ni - 3Cr - 10Al: in addition, a discontinuous Al2O3 layer formed at the front of the internal oxidation for Ni - 3Cr - 10Al. An exclusive external scale of Al2O3 formed at most places on Ni - 5Cr - 10Al at 900 degrees C, while, at some sites, the same alloy formed an outer NiO layer overlying an internal oxidation zone. The scales formed on Ni - 5Cr - 10Al at 1000 degrees C were complex, but eventually a protective Al2O3 layer developed either at the alloy surface or beneath a region containing a mixture of different oxides. Finally, an exclusive external Al2O3 layer formed on Ni - 10Cr - 10Al at both temperatures. Thus, the addition of sufficient chromium to Ni - 10Al produced a classical third-element effect, inducing the transition between internal and external oxidation of aluminum under a constant Al content. A possible mechanism for the effect of chromium on the oxidation of Ni - 10Al is discussed 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. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34717]  |
| 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 | X. J. Zhang,S. Y. Wang,F. Gesmundo,et al. The effect of Cr on the oxidation of Ni-10 at% Al in 1 atm O-2 at 900-1000 degrees C[J]. Oxidation of Metals,2006,65(3-4):151-165. |
| APA | X. J. Zhang,S. Y. Wang,F. Gesmundo,&Y. Niu.(2006).The effect of Cr on the oxidation of Ni-10 at% Al in 1 atm O-2 at 900-1000 degrees C.Oxidation of Metals,65(3-4),151-165. |
| MLA | X. J. Zhang,et al."The effect of Cr on the oxidation of Ni-10 at% Al in 1 atm O-2 at 900-1000 degrees C".Oxidation of Metals 65.3-4(2006):151-165. |
入库方式： OAI收割
来源：金属研究所
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