Transient of alumina oxide scale on beta-NiAl coated on M38G alloy at 950 degrees C
文献类型：期刊论文
| 作者 | G. M. Liu ; M. S. Li ; M. Zhu ; Y. C. Zhou |
| 刊名 | Intermetallics
 |
| 出版日期 | 2007 |
| 卷号 | 15期号:10页码:1285-1290 |
| 关键词 | nickel aluminides coatings based on NiAl oxidation intermetallic and otherwise phase transformations high-temperature oxidation theta-alpha-al2o3 transformation behavior coatings superalloy transition layers |
| ISSN号 | 0966-9795 |
| 中文摘要 | The phase transformation of alumina formed during oxidation of beta-NiAl coating prepared on M38G alloy by pack cementation was investigated. Oxidation experiments were conducted at 950 degrees C for various times from 2 to 180 min. The phase composition and microstructure of the oxide scales were investigated by using glancing angle XRD, AFM and SEM. The results showed that at the initial oxidation stage needle-like theta-Al2O3 was formed and then it covered the sample surface rapidly. The formation of alpha-Al2O3 grains beneath the theta-Al2O3 layer was favored by depletion of Al in the beta-NiAl coating during oxidation. alpha-Al2O3 preferred growing on the top (ridge) of beta-NiAl grains, which resulted in the formation of net-like alpha-Al2O3 inner layer. With increasing time, theta-Al2O3 transformed to alpha-Al2O3 gradually. After 180 min oxidation, most of alpha-Al2O3 grains transformed into alpha-Al2O3. A mechanism of excessive voids' formation at the oxide/coating interface was also proposed in this paper. (c) 2007 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33700]  |
| 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. M. Liu,M. S. Li,M. Zhu,et al. Transient of alumina oxide scale on beta-NiAl coated on M38G alloy at 950 degrees C[J]. Intermetallics,2007,15(10):1285-1290. |
| APA | G. M. Liu,M. S. Li,M. Zhu,&Y. C. Zhou.(2007).Transient of alumina oxide scale on beta-NiAl coated on M38G alloy at 950 degrees C.Intermetallics,15(10),1285-1290. |
| MLA | G. M. Liu,et al."Transient of alumina oxide scale on beta-NiAl coated on M38G alloy at 950 degrees C".Intermetallics 15.10(2007):1285-1290. |
入库方式： OAI收割
来源：金属研究所
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