| Improved oxide spallation resistance of microcrystalline Ni-Cr-Al coatings | |
| Z. Y. Liu; W. Gao; K. L. Dahm; F. H. Wang | |
| 1998 | |
| 发表期刊 | Oxidation of Metals
 |
| ISSN | 0030-770X |
| 卷号 | 50期号:1-2页码:51-69 |
| 摘要 | Microcrystalline Ni-20Cr-3Al coatings were deposited on Ni-20Cr-3Al substrates by unbalanced magnetron-sputter deposition. The grain size of the coatings was varied by using different Ar pressures. Cyclic-oxidation testing was performed at 1100 degrees C, It was found that (1) an external alpha-Al2O3 scale formed on coating A (4.7 mu m thick, 50 nm grain size), (2) an external Cr2O3 scale and internal Al2O3 oxide formed on coating B (14 mu m thick, 500 nm grain size); and (3) an outer layer scale of Cr2O3+NiCr2O4 and interior laver of Al2O3 formed on the as-cast alloy. Extensive spallation of the Cr2O3+NiCr2O4 scale took place on the as-cast alloy, but no obvious spallation occurred on the two coatings. Improvement of the spallation resistance of the scale is explained by effective diffusional creep of the coatings and the micropegging effect of the inward-grown oxides. |
| 部门归属 | univ auckland, dept chem & mat engn, auckland 1, new zealand. acad sinica, inst corros & protect met, state key lab corros & protect, shenyang 110015, peoples r china.;liu, zy (reprint author), univ auckland, dept chem & mat engn, auckland 1, new zealand |
| 关键词 | Ni-cr-al Alloy Magnetron-sputter Deposition Microcrystalline Coatings Cyclic Oxidation Scale Spallation Oxidation Resistance Temperature Transport Systems Alloys |
| URL | 查看原文 |
| WOS记录号 | WOS:000075336400003 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/37723 |
| 专题 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Z. Y. Liu,W. Gao,K. L. Dahm,et al. Improved oxide spallation resistance of microcrystalline Ni-Cr-Al coatings[J]. Oxidation of Metals,1998,50(1-2):51-69. |
| APA | Z. Y. Liu,W. Gao,K. L. Dahm,&F. H. Wang.(1998).Improved oxide spallation resistance of microcrystalline Ni-Cr-Al coatings.Oxidation of Metals,50(1-2),51-69. |
| MLA | Z. Y. Liu,et al."Improved oxide spallation resistance of microcrystalline Ni-Cr-Al coatings".Oxidation of Metals 50.1-2(1998):51-69. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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