Enhanced oxidation resistance of an AlSi alloy coating via Cr barrier layer insertion
文献类型：期刊论文
| 作者 | Liu, Tianxin1; Wang, Zhiguo1; Xiang, Lin2; Zhao, Yanhui3; Tao, Jianquan2; Hu, Suying1; Huang, Bo2; Xie, Zhiwen1 |
| 刊名 | SURFACE & COATINGS TECHNOLOGY
 |
| 出版日期 | 2022-10-15 |
| 卷号 | 447页码:13 |
| 关键词 | Stainless steel Coating Oxidation resistance Diffusion barrier layer Healing effect |
| ISSN号 | 0257-8972 |
| DOI | 10.1016/j.surfcoat.2022.128836 |
| 通讯作者 | Zhao, Yanhui(yhzhao@imr.ac.cn) ; Xie, Zhiwen(xzwustl@126.com) |
| 英文摘要 | A novel Cr barrier layer was designed for suppressing the interdiffusion of an AlSi alloy coating on stainless steel. Without a Cr barrier layer, the same coating experienced a severe element interdiffusion upon exposure to high-temperature air. The rapid upward movement of the Fe atoms induced the formation of the (FeAl + Fe2Al5) alloy compounds and eventually led to severe volume shrinkage and the ultimate fracture of coating. The significant downward diffusion of the (Al + Si) atoms not only triggered numerous pores but also induced the accumulation of the FeAl alloy compound in the substrate resulting in extreme interfacial cracking. In contrast, a diffusion barrier layer comprising (Cr2O3 + SiO2) and Al2O3 was formed in the coating with a Cr layer during high-temperature exposure, effectively preventing the rapid elemental interdiffusion. Moreover, it inhibited the for-mation of the (FeAl + Fe2Al5) alloy compounds in the coating as well as prevented the accumulation of the FeAl in the substrate. The obvious upward diffusion of Cr atoms further healed these pores induced by the downward diffusion of (Al + Si) atoms. The strong barrier capability of this composite oxide layer and the healing effect of Cr diffusion eventually led to an improved oxidation resistance of the Cr-coated layer.
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| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000859607500002 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.imr.ac.cn/handle/321006/176091]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhao, Yanhui; Xie, Zhiwen |
| 作者单位 | 1.Univ Sci & Technol Liaoning, Anshan 114051, Peoples R China 2.Southwest Technol & Engn Res Inst, Chongqing 400039, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Tianxin,Wang, Zhiguo,Xiang, Lin,et al. Enhanced oxidation resistance of an AlSi alloy coating via Cr barrier layer insertion[J]. SURFACE & COATINGS TECHNOLOGY,2022,447:13. |
| APA | Liu, Tianxin.,Wang, Zhiguo.,Xiang, Lin.,Zhao, Yanhui.,Tao, Jianquan.,...&Xie, Zhiwen.(2022).Enhanced oxidation resistance of an AlSi alloy coating via Cr barrier layer insertion.SURFACE & COATINGS TECHNOLOGY,447,13. |
| MLA | Liu, Tianxin,et al."Enhanced oxidation resistance of an AlSi alloy coating via Cr barrier layer insertion".SURFACE & COATINGS TECHNOLOGY 447(2022):13. |
入库方式： OAI收割
来源：金属研究所
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