Cyclic Oxidation and Hot Corrosion Behavior of Y/Cr-Modified Aluminide Coatings Prepared by a Hybrid Slurry/Pack Cementation Process
文献类型：期刊论文
| 作者 | J. T. Lu ; S. L. Zhu ; F. H. Wang |
| 刊名 | Oxidation of Metals
 |
| 出版日期 | 2011 |
| 卷号 | 76期号:1-2页码:67-82 |
| 关键词 | Y/Cr-modified aluminide coating Pack cementation process Slurry Oxidation Hot corrosion high-temperature oxidation pack-cementation base superalloys alloys yttrium nickel cr mechanism al |
| ISSN号 | 0030-770X |
| 中文摘要 | Y/Cr-modified aluminide coatings were prepared on a Ni-base super-alloy K417G using a hybrid slurry/pack cementation process. The coatings consisted of a NiAl layer with dissolved Cr and Y. The microstructures and high temperature corrosion behavior of the coatings were characterized using SEM/EDS, XRD, EPMA and SIMS. Cyclic oxidation tests at 1000 degrees C for 200 h were carried out in air. The results indicated that specimens coated by either the Y/Cr-modified aluminide coatings or the simple aluminide coatings exhibited better oxidation resistances than the cast alloy. The Y/Cr-modified aluminide coatings possessed lower oxidation rates and better degradation resistance than the simple aluminide coatings during the oxidation tests. Furthermore, the alumina scales formed on the Y/Cr-modified aluminide coatings were considerably more adherent than those on the simple aluminide coatings during the thermal cycling. The hot corrosion tests consisted of applying a 25 wt% K(2)SO(4) + 75 wt% Na(2)SO(4) salt mixture to the specimens and exposing at 900 degrees C. The Y/Cr-modified aluminide coatings showed the longest service life compared with the cast alloy and aluminide coatings, which suffered significant sulfur attack. After 200 h, the Y/Cr-modified aluminide coatings were still protective. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30560]  |
| 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 | J. T. Lu,S. L. Zhu,F. H. Wang. Cyclic Oxidation and Hot Corrosion Behavior of Y/Cr-Modified Aluminide Coatings Prepared by a Hybrid Slurry/Pack Cementation Process[J]. Oxidation of Metals,2011,76(1-2):67-82. |
| APA | J. T. Lu,S. L. Zhu,&F. H. Wang.(2011).Cyclic Oxidation and Hot Corrosion Behavior of Y/Cr-Modified Aluminide Coatings Prepared by a Hybrid Slurry/Pack Cementation Process.Oxidation of Metals,76(1-2),67-82. |
| MLA | J. T. Lu,et al."Cyclic Oxidation and Hot Corrosion Behavior of Y/Cr-Modified Aluminide Coatings Prepared by a Hybrid Slurry/Pack Cementation Process".Oxidation of Metals 76.1-2(2011):67-82. |
入库方式： OAI收割
来源：金属研究所
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