Influence of Re on the Properties of a NiCoCrAlY Coating Alloy
文献类型：期刊论文
| 作者 | J. J. Liang ; H. Wei ; Y. L. Zhu ; X. F. Sun ; Z. Q. Hu ; M. S. Dargusch ; X. D. Yao |
| 刊名 | Journal of Materials Science & Technology
 |
| 出版日期 | 2011 |
| 卷号 | 27期号:5页码:408-414 |
| 关键词 | NiCoCrAlY Phase constitution Oxidation Thermal expansion behavior Hardness thermal barrier coatings mcraly coatings rhenium system mechanisms behavior |
| ISSN号 | 1005-0302 |
| 中文摘要 | MCrAlY can serve as stand-alone overlay coatings or bond coats in thermal barrier coating systems, and its properties play a. vital role in determining the performance of these coating systems. In order to further understand the behavior of MCrAlY coatings, several NiCoCrAlY model alloys with different levels of Re (0.3 wt%, 6 wt%, and 9 wt%) were investigated. Microstructural observation showed the addition of Re promoted the precipitation of Cr-rich phases, such as alpha-Cr and sigma. The presence of alpha-Cr lowered the coefficient of thermal expansion (CTE) of the coating alloys, which could reduce the CTE mismatch at the scale-metal interface. The solid solution strengthening effect of Re is responsible for an increase in Rockwell hardness of the coating alloys. But the isothermal oxidation resistance at 1100 degrees C was deteriorated due to the precipitation of brittle alpha-Cr phase, a phase of inferior oxidation resistance compared with beta-NiAl and gamma-Ni. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30497]  |
| 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 | J. J. Liang,H. Wei,Y. L. Zhu,et al. Influence of Re on the Properties of a NiCoCrAlY Coating Alloy[J]. Journal of Materials Science & Technology,2011,27(5):408-414. |
| APA | J. J. Liang.,H. Wei.,Y. L. Zhu.,X. F. Sun.,Z. Q. Hu.,...&X. D. Yao.(2011).Influence of Re on the Properties of a NiCoCrAlY Coating Alloy.Journal of Materials Science & Technology,27(5),408-414. |
| MLA | J. J. Liang,et al."Influence of Re on the Properties of a NiCoCrAlY Coating Alloy".Journal of Materials Science & Technology 27.5(2011):408-414. |
入库方式： OAI收割
来源：金属研究所
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