High-temperature oxidation and hot-corrosion behavior of a sputtered NiCrAlY coating with and without aluminizing
文献类型：期刊论文
| 作者 | X. Ren ; F. H. Wang |
| 刊名 | Surface & Coatings Technology
 |
| 出版日期 | 2006 |
| 卷号 | 201期号:1-2页码:30-37 |
| 关键词 | sputtered NiCrAlY coating aluminizing oxidation hot corrosion nickel-base superalloys nacl |
| ISSN号 | 0257-8972 |
| 中文摘要 | A nanocrystalline Ni-30Cr-8Al-0.5Y coating was deposited on a Ni-base superalloy by magnetron sputtering. Post-aluminizing was performed on the sputtered coating to improve the corresponding high-temperature properties. The isothermal oxidation behavior at 1000 similar to 1100 degrees C and hot-corrosion behavior in the presence of 75 wt.% Na2SO4+25 wt.% K2SO4/NaCl film at 900 degrees C of the sputtered coating with and without aluminizing have been investigated using TGA, SEM/EDS, XRD and EPMA, respectively. The results indicated that the sputtered NiCrAlY coating possessed excellent oxidation resistance at 1000 degrees C due to the presence of extensive amount of chromium and good amount of aluminum. Because of the excessive consumption of Al in the coating, it lost protection at 1100 degrees C. The mass gain of the aluminized NiCrAlY coating was a little higher than that of the sputtered coating due to the formation of the rapid growth theta-Al2O3 phase at 1000 degrees C. At 1100 degrees C the oxidation resistance of the latter was better than that of the former. The sputtered coating provided a limited protection at the transient hot-corrosion stage in the molten salt film and degenerated completely with time. On the contrary, the aluminized NiCrAlY coating showed much better hot-corrosion resistance in the presence of 75 wt.% Na2SO4+K2SO4/NaCl film as a result of the formation of a continuous and protective Al2O3 scale. (c) 2005 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34447]  |
| 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 | X. Ren,F. H. Wang. High-temperature oxidation and hot-corrosion behavior of a sputtered NiCrAlY coating with and without aluminizing[J]. Surface & Coatings Technology,2006,201(1-2):30-37. |
| APA | X. Ren,&F. H. Wang.(2006).High-temperature oxidation and hot-corrosion behavior of a sputtered NiCrAlY coating with and without aluminizing.Surface & Coatings Technology,201(1-2),30-37. |
| MLA | X. Ren,et al."High-temperature oxidation and hot-corrosion behavior of a sputtered NiCrAlY coating with and without aluminizing".Surface & Coatings Technology 201.1-2(2006):30-37. |
入库方式： OAI收割
来源：金属研究所
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