Oxidation behavior of a single-crystal Ni-base superalloy between 900 and 1000 degrees C in air
文献类型：期刊论文
| 作者 | C. T. Liu ; J. Ma ; X. F. Sun |
| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 2010 |
| 卷号 | 491期号:1-2页码:522-526 |
| 关键词 | Single-crystal (SC) superalloy Oxidation kinetics Surface morphology Microstructure stress rupture behavior cr-al alloys coatings microstructure |
| ISSN号 | 0925-8388 |
| 中文摘要 | The oxidation behavior of a single-crystal Ni-base superalloy DD32 was studied in air at 900 and 1000 degrees C and analyzed by X-ray diffraction (XRD), scanning electron microscopy, combined with energy-dispersive X-ray spectroscopy (SEM/EDS). At 900 and 1000 degrees C, two oxidation steps appear in the oxidation kinetics. The first one is controlled by NiO growth and the second by Al(2)O(3) growth until a continuous Al(2)O(3) layer formed under the previously grown NiO layer after a critical time. The variations in the chemical composition due to segregations, which resulted from the solidification process, led to the formation of different kinds of oxide scale on the dendritic and interdendritic area during oxidation between 900 and 1000 degrees C. The scales formed between 900 and 1000 degrees C were complicated, and consisted of three layers: an outer columnar NiO layer with a small amount of CoO, an intermediate layer mainly composed of W(20)O(58), CrTaO(4), a small amount of spinels NiCr(2)O(4), NiAl(2)O(4) and CoAl(2)O(4), an inner continuous layer of alpha-Al(2)O(3). Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31270]  |
| 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 | C. T. Liu,J. Ma,X. F. Sun. Oxidation behavior of a single-crystal Ni-base superalloy between 900 and 1000 degrees C in air[J]. Journal of Alloys and Compounds,2010,491(1-2):522-526. |
| APA | C. T. Liu,J. Ma,&X. F. Sun.(2010).Oxidation behavior of a single-crystal Ni-base superalloy between 900 and 1000 degrees C in air.Journal of Alloys and Compounds,491(1-2),522-526. |
| MLA | C. T. Liu,et al."Oxidation behavior of a single-crystal Ni-base superalloy between 900 and 1000 degrees C in air".Journal of Alloys and Compounds 491.1-2(2010):522-526. |
入库方式： OAI收割
来源：金属研究所
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