The oxide scale formation and evolution on detonation gun sprayed NiCrAlY coatings during isothermal oxidation
文献类型：期刊论文
| 作者 | Z. X. Chen ; F. H. Yuan ; Z. G. Wang ; S. J. Zhu |
| 刊名 | Materials Transactions
 |
| 出版日期 | 2007 |
| 卷号 | 48期号:10页码:2695-2702 |
| 关键词 | NiCrAlY coating oxidation thermally grown oxide detonation gun spray thermal barrier coatings high-temperature oxidation bond coatings stress-distribution spalling failure behavior diffusion systems tbc superalloy |
| ISSN号 | 1345-9678 |
| 中文摘要 | NiCrAlY coatings were prepared by the newly-developed detonation gun spray process. The oxide scale formation and evolution on these coatings during isothermal oxidation in air at 1100 degrees C were investigated. It was found that semi-molten particles, particle debris and pores, are present in the surface layer of the as-sprayed coating. During 100 h oxidation, the particle debris and some semi-molten particles gradually change into oxide mixture consisting of spinel, chromia and nickel oxides. However, after removal of the surface layer of the coating by a grinding treatment, a dense and single-layer alpha-Al2O3 scale forms on the surface of the coating during the oxidation. The mechanisms governing the oxide scale formation and evolution are discussed in terms of atomic diffusion and thermodynamic stability. In addition, thermogravimetric analysis showed that the oxidation rate of the ground NiCrAlY coating at 1100 degrees C is much lower than that of the as-sprayed one. The residual stress in thermally grown oxide scales was investigated using photo-stimulated luminescence spectroscopy. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33475]  |
| 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 | Z. X. Chen,F. H. Yuan,Z. G. Wang,et al. The oxide scale formation and evolution on detonation gun sprayed NiCrAlY coatings during isothermal oxidation[J]. Materials Transactions,2007,48(10):2695-2702. |
| APA | Z. X. Chen,F. H. Yuan,Z. G. Wang,&S. J. Zhu.(2007).The oxide scale formation and evolution on detonation gun sprayed NiCrAlY coatings during isothermal oxidation.Materials Transactions,48(10),2695-2702. |
| MLA | Z. X. Chen,et al."The oxide scale formation and evolution on detonation gun sprayed NiCrAlY coatings during isothermal oxidation".Materials Transactions 48.10(2007):2695-2702. |
入库方式： OAI收割
来源：金属研究所
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