Preparation and oxidation resistance of a crack-free Al diffusion coating on Ti22Al26Nb
文献类型：期刊论文
| 作者 | K. Zhang ; Q. M. Wang ; C. Sun ; F. H. Wang |
| 刊名 | Corrosion Science
 |
| 出版日期 | 2007 |
| 卷号 | 49期号:9页码:3598-3609 |
| 关键词 | alloy metal coatings titanium effects of strain oxidation titanium-aluminum system thermal barrier coatings pack cementation method cyclic oxidation orthorhombic alloys tial intermetallics nb addition behavior phases al3ti |
| ISSN号 | 0010-938X |
| 中文摘要 | A crack-free Al diffusion coating has been developed to improve the oxidation resistance of Ti22Al26Nb. It was produced by a two-step method; an Al film was deposited on the substrate alloy by arc ion plating followed by a diffusion process conducted at 873 K in pure Ar to form the Al diffusion coating. The two-step method lowers the temperature required to form the diffusion coating, which dramatically decreases the thermal stress developed in the coating and results in it being crack-free. The oxidation resistance of the non-coated Ti22Al26Nb alloy in isothermal and cyclic tests in air at 1073 K was poor, but the coated specimens possessed excellent oxidation resistance because a protective alpha-Al2O3 scale formed. The life of the Al diffusion coating greatly depends upon the rapid initial formation of a protective Al2O3 scale and interdiffusion between coating and substrate. Once the stable Al2O3 scale has formed and the composition changes from (Ti, Nb)Al-3 into (Ti, Nb)Al-2, the coating has a long life. Published by Elsevier Ltd. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34036]  |
| 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 | K. Zhang,Q. M. Wang,C. Sun,et al. Preparation and oxidation resistance of a crack-free Al diffusion coating on Ti22Al26Nb[J]. Corrosion Science,2007,49(9):3598-3609. |
| APA | K. Zhang,Q. M. Wang,C. Sun,&F. H. Wang.(2007).Preparation and oxidation resistance of a crack-free Al diffusion coating on Ti22Al26Nb.Corrosion Science,49(9),3598-3609. |
| MLA | K. Zhang,et al."Preparation and oxidation resistance of a crack-free Al diffusion coating on Ti22Al26Nb".Corrosion Science 49.9(2007):3598-3609. |
入库方式： OAI收割
来源：金属研究所
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