Effect of nanocrystallization on the oxidation behavior of a Ni-8Cr-3.5Al alloy
文献类型：期刊论文
| 作者 | G. F. Chen ; H. Y. Lou |
| 刊名 | Oxidation of Metals
 |
| 出版日期 | 2000 |
| 卷号 | 54期号:1-2页码:155-162 |
| 关键词 | Ni-8Cr-3.5Al nanocrystallization oxidation pm ni3al alloy grain-size selective oxidation high-temperature superalloy k38g |
| ISSN号 | 0030-770X |
| 中文摘要 | Magnetron-sputter deposition was used to produce a Ni-8Cr-3.5Al (wt.%) nanocrystalline coating on substrates of the same alloy. The oxidation behavior of the cast Ni-8Cr-3.5Al alloy and its sputtered coating were investigated at 1000 degrees C in air. Complex, layered-oxide scales composed of Cr2O3 outer layer, mixed spinel NiAl2O4 and NiCr2O4 middle layer, and alpha-Al2O3 inner layer were formed on the Ni-8Cr-3.5Al nanocrystalline coating during 200-hr oxidation, whereas Cr2O3, with some NiCr2O4 external layer with internal Al2O3,, formed on the cast alloy. Because of the formation of this alpha-Al2O3, inner layer on the coating, the sputtered Ni-8Cr-3.5Al coating showed better oxidation resistance than the cast alloy. The effect of nanocrystallization on oxide formation is discussed. It was indicated that the formation of this alpha-Al2O3 inner layer was closely related to the rapid diffusion of Al through grain boundaries in the nanocrystalline coating and the relatively high Cr content in Ni-8Cr-3.5Al. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36982]  |
| 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. F. Chen,H. Y. Lou. Effect of nanocrystallization on the oxidation behavior of a Ni-8Cr-3.5Al alloy[J]. Oxidation of Metals,2000,54(1-2):155-162. |
| APA | G. F. Chen,&H. Y. Lou.(2000).Effect of nanocrystallization on the oxidation behavior of a Ni-8Cr-3.5Al alloy.Oxidation of Metals,54(1-2),155-162. |
| MLA | G. F. Chen,et al."Effect of nanocrystallization on the oxidation behavior of a Ni-8Cr-3.5Al alloy".Oxidation of Metals 54.1-2(2000):155-162. |
入库方式： OAI收割
来源：金属研究所
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