Transient oxidation behavior of nanocrystalline CoCrAlY coating at 1050 degrees C
文献类型：期刊论文
| 作者 | G. Liu ; M. Li ; J. Ma ; D. Nan ; Y. Zhou |
| 刊名 | Transactions of Nonferrous Metals Society of China
 |
| 出版日期 | 2007 |
| 卷号 | 17期号:3页码:595-599 |
| 关键词 | CoCrAlY coating oxidation Al2O3 phase transformation high-temperature oxidation theta-alpha-al2o3 transformation alloys growth scales |
| ISSN号 | 1003-6326 |
| 中文摘要 | Nanocrystalline CoCrAlY overlay coating was prepared on M38G superalloy by magnetron sputtering deposition. To investigate the oxidation behavior and phase transformation of alumina during oxidation, the oxidation experiments were conducted at 1 050 degrees C for various time in the range of 5-180 min. The phase compositions of the oxide scales were investigated by using glancing an-le X-ray diffraction(XRD). The microstructure analysis of oxide scales was carried out by means of scanning electron microscopy(SEM). The growth process of metastable alumina at the grain boundaries and transformation to stable alumina were discussed. The results Show that at the initial oxidation stage the mixture of (delta-Al2O3, gamma-Al2O3 and alpha-Al2O3 is formed on the sample surface rapidly. Especially, delta-Al2O3 and gamma-Al2O3 prefer growing at the grain boundaries of CoCrAlY coating. With increasing oxidation time, delta-Al2O3 and gamma-Al2O3 transform to theta-Al2O3, afterwards theta-Al2O3 transforms to alpha-Al2O3 gradually. After 180 min oxidation, theta-Al2O3 transforms into alpha-Al2O3 completely. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33698]  |
| 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 | G. Liu,M. Li,J. Ma,et al. Transient oxidation behavior of nanocrystalline CoCrAlY coating at 1050 degrees C[J]. Transactions of Nonferrous Metals Society of China,2007,17(3):595-599. |
| APA | G. Liu,M. Li,J. Ma,D. Nan,&Y. Zhou.(2007).Transient oxidation behavior of nanocrystalline CoCrAlY coating at 1050 degrees C.Transactions of Nonferrous Metals Society of China,17(3),595-599. |
| MLA | G. Liu,et al."Transient oxidation behavior of nanocrystalline CoCrAlY coating at 1050 degrees C".Transactions of Nonferrous Metals Society of China 17.3(2007):595-599. |
入库方式： OAI收割
来源：金属研究所
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