Breakaway oxidation of a low-Al content nanocrystalline coating at 1000 degrees C
文献类型：期刊论文
| 作者 | Sun, Wenyao1,2; Chen, Minghui3; Bao, Zebin1; Wu, Changjun4; Zhu, Shenglong1,2; Wang, Fuihui1,3 |
| 刊名 | SURFACE & COATINGS TECHNOLOGY
 |
| 出版日期 | 2019-01-25 |
| 卷号 | 358页码:958-967 |
| 关键词 | Superalloys Nanocrystalline coating High-temperature oxidation |
| ISSN号 | 0257-8972 |
| DOI | 10.1016/j.surfcoat.2018.12.034 |
| 通讯作者 | Chen, Minghui(mhchen@mail.neu.edu.cn) ; Bao, Zebin(zbbao@imr.ac.cn) |
| 英文摘要 | Nanocrystalline coating though with low Al reservoir shows high oxidation and spallation resistance, owing to its high density of defects and grain boundaries. It now attracts growing attention. However, with oxidation going on, its stability is always a significant concern since such a high-temperature protective coating should be designed with a long life-expectancy when the nano-sized grains have grown and the reserved Al has been consumed a lot. Yet, this issue has never been clarified. To identify the exact mode of breakaway oxidation, a nanocrystalline coating was prepared with very low Al content that could decrease fast to a critical value in a very short oxidation time. Its oxidation behaviour related with the stability was studied in detail at 1000 degrees C. Results indicate that an intact external alumina scale still forms at the surface of the nanocrystalline coating initially. However, after 100 h exposure, grains growing and the continuous consuming of Al of the nanocrystalline coating lead to oxidation of Ti and doping of titanium oxide in the alumina scale, which was accompanied with the formation of abundant micropores and cracks. Thereafter, scale spalls off and abundant less-protective oxides, e.g. TiO2, NiCr2O4, NiTiO3, form, and breakaway oxidation occurs. |
| 资助项目 | National Natural Science Foundation of China[51671053] ; Jiangsu Province Key Laboratory of Materials Surface Science and Technology[KFBM20170001] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000456762300113 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; Jiangsu Province Key Laboratory of Materials Surface Science and Technology |
| 源URL | [http://ir.imr.ac.cn/handle/321006/131342]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Chen, Minghui; Bao, Zebin |
| 作者单位 | 1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Corros & Protect Div, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Coll Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Northeastern Univ, Shenyang Natl Lab Mat Sci, Corros & Protect Div, Shenyang 110819, Liaoning, Peoples R China 4.Changzhou Univ, Jiangsu Key Lab Mat Surface Sci & Technol, Changzhou 213164, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Wenyao,Chen, Minghui,Bao, Zebin,et al. Breakaway oxidation of a low-Al content nanocrystalline coating at 1000 degrees C[J]. SURFACE & COATINGS TECHNOLOGY,2019,358:958-967. |
| APA | Sun, Wenyao,Chen, Minghui,Bao, Zebin,Wu, Changjun,Zhu, Shenglong,&Wang, Fuihui.(2019).Breakaway oxidation of a low-Al content nanocrystalline coating at 1000 degrees C.SURFACE & COATINGS TECHNOLOGY,358,958-967. |
| MLA | Sun, Wenyao,et al."Breakaway oxidation of a low-Al content nanocrystalline coating at 1000 degrees C".SURFACE & COATINGS TECHNOLOGY 358(2019):958-967. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。