Effect of the theta-alpha-Al2O3 transformation in scales on the oxidation behavior of a nickel-base superalloy with an aluminide diffusion coating
文献类型：期刊论文
| 作者 | T. F. An ; H. R. Guan ; X. F. Sun ; Z. Q. Hu |
| 刊名 | Oxidation of Metals
 |
| 出版日期 | 2000 |
| 卷号 | 54期号:3-4页码:301-316 |
| 关键词 | beta-NiAl diffusion coating alpha-Al2O3 theta-Al2O3 oxidation mechanism al-y alloys fe-cr-al intergranular oxidation transient oxidation high-temperature morphology mechanisms yttrium |
| ISSN号 | 0030-770X |
| 中文摘要 | The high-temperature oxidation behavior of a nickel-base superalloy and aluminide-diffusion coating has been investigated over the temperature range from 800-1100 degrees C and analyzed by TGA, XRD, EDAX, and SEM. The beta-NiAl coating was formed by low-pressure gas-phase cementation at 950 degrees C for 3 hr. It was found that the formation of alpha-Al2O3 from theta-Al2O3 on the beta-NiAl coating resulted in a sharp decrease in the parabolic rate constant k(p) by one order of magnitude at 1050 degrees C during transient oxidation. The transformation caused the anomalous behavior of the oxidation kinetics curves of this diffusion coating in the temperature range 800-1100 degrees C within the first 100 hr. A change in the morphology of scales also occurred with the transformation. A growth stress was characterized by the formation of convoluted scales, which were observed on the surface after oxidation. The oxidation mechanism of this beta-NiAl diffusion coating is described. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36968]  |
| 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 | T. F. An,H. R. Guan,X. F. Sun,et al. Effect of the theta-alpha-Al2O3 transformation in scales on the oxidation behavior of a nickel-base superalloy with an aluminide diffusion coating[J]. Oxidation of Metals,2000,54(3-4):301-316. |
| APA | T. F. An,H. R. Guan,X. F. Sun,&Z. Q. Hu.(2000).Effect of the theta-alpha-Al2O3 transformation in scales on the oxidation behavior of a nickel-base superalloy with an aluminide diffusion coating.Oxidation of Metals,54(3-4),301-316. |
| MLA | T. F. An,et al."Effect of the theta-alpha-Al2O3 transformation in scales on the oxidation behavior of a nickel-base superalloy with an aluminide diffusion coating".Oxidation of Metals 54.3-4(2000):301-316. |
入库方式： OAI收割
来源：金属研究所
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