Thermal stability of phases in a NiCoCrAlY coating alloy
文献类型：期刊论文
| 作者 | J. J. Liang ; H. Wei ; G. C. Hou ; Q. Zheng ; X. F. Sun ; H. R. Guan ; Z. Q. Hu |
| 刊名 | Journal of Materials Research
 |
| 出版日期 | 2008 |
| 卷号 | 23期号:8页码:2264-2274 |
| 关键词 | aluminide bond coat barrier coatings mcraly-coatings martensitic-transformation microstructural evolution oxidation precipitation rhenium |
| ISSN号 | 0884-2914 |
| 中文摘要 | The temperature dependence of the thermal stability in a NiCoCrAlY coating alloy was examined by experimental observation and thermodynamic modeling in the 400-1200 degrees C temperature range. The results indicated that the thermal stabilities of primary beta-NiAl, beta-NiAl/alpha-Cr eutectic, and gamma-Ni were slightly temperature dependent, but those of gamma'-Ni3Al, sigma-(Cr,Co,Ni), and alpha-Cr were strongly temperature dependent in the annealed NiCoCrAlY specimens. The temperature dependence of the thermal stabilities among gamma'-Ni3Al, sigma-(Cr,Co,Ni), and alpha-Cr might be ascribed to the sigma ->alpha transformation at similar to 1100 degrees C and the gamma'->gamma transformation at similar to 800 degrees C. Further, using Thermocalc associated with TTNi7 database, thermodynamic equilibria were calculated. The modeling results were compared with the experimental results and found to be in reasonable agreement with the experimental observations of beta-NiAl, sigma-(Cr,Co,Ni), and gamma'-N3Al. Some deviations observed are discussed in the light of both limited availability of thermodynamic data and experimental problems. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32916]  |
| 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,G. C. Hou,et al. Thermal stability of phases in a NiCoCrAlY coating alloy[J]. Journal of Materials Research,2008,23(8):2264-2274. |
| APA | J. J. Liang.,H. Wei.,G. C. Hou.,Q. Zheng.,X. F. Sun.,...&Z. Q. Hu.(2008).Thermal stability of phases in a NiCoCrAlY coating alloy.Journal of Materials Research,23(8),2264-2274. |
| MLA | J. J. Liang,et al."Thermal stability of phases in a NiCoCrAlY coating alloy".Journal of Materials Research 23.8(2008):2264-2274. |
入库方式： OAI收割
来源：金属研究所
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