Improvement in oxidation resistance of a Ni3Al-based superalloy IC6 by rhenium-based diffusion barrier coatings
文献类型：期刊论文
| 作者 | F. Lang ; T. Narita |
| 刊名 | Intermetallics
 |
| 出版日期 | 2007 |
| 卷号 | 15期号:4页码:599-606 |
| 关键词 | nickel aluminides based on Ni3Al oxidation diffusion coatings intermetallic and otherwise ni3al based alloy degrees c mechanisms behavior |
| ISSN号 | 0966-9795 |
| 中文摘要 | The oxidation behavior of a Ni3Al-based superalloy IC6 coated with a duplex Re-Cr-Ni-Mo diffusion barrier layer and an Al reservoir layer was investigated in air at 1423 K for up to 1080 ks. The diffusion barrier layer was formed by electroplating Re(Ni) and Ni films on the alloy, followed by Cr pack cementation at 1573 K, and as a result, forms a continuous inner Re-&-Ni-Mo diffusion barrier layer and an outer Ni(Cr,Mo,Al) layer. Then a Ni film was electroplated on the Ni(Cr,Mo,Al) layer, followed by Al-pack cementation at 1273 K for 18 ks, to form an Al reservoir layer with a duplex Ni2Al3 and y-Ni(Cr,Mo,Al) layers. After oxidation at 1423 K in air for 1080 ks, the Al reservoir layer changed to a gamma-Ni-Cr-4-Mo-5-12Al (all in at%) layer, on which a protective alpha-Al2O3 scale formed. The Re-Cr(Mo)-Ni layer was stable and effectively retarded the interdiffusion between the Al reservoir layer and the alloy, as a result, the depth of the microstructural change zone of the alloy was less than 15 mu m. In contrast, the bare and the coated IC6 superalloy only with an Al reservoir layer were significantly oxidized, accompanied by serious spallation of oxide scales. After oxidation at 1423 K for 1080 ks, the depth of the microstructural change zone of the alloy was about 200 mu m for the bare and coated alloy only with an Al reservoir layer. These results indicate that the oxidation resistance of IC6 superalloy can be effectively improved by coating with a Re-&-Ni-Mo diffusion barrier layer and an Al reservoir layer. (c) 2006 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33620]  |
| 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 | F. Lang,T. Narita. Improvement in oxidation resistance of a Ni3Al-based superalloy IC6 by rhenium-based diffusion barrier coatings[J]. Intermetallics,2007,15(4):599-606. |
| APA | F. Lang,&T. Narita.(2007).Improvement in oxidation resistance of a Ni3Al-based superalloy IC6 by rhenium-based diffusion barrier coatings.Intermetallics,15(4),599-606. |
| MLA | F. Lang,et al."Improvement in oxidation resistance of a Ni3Al-based superalloy IC6 by rhenium-based diffusion barrier coatings".Intermetallics 15.4(2007):599-606. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。