Corrosion Behavior of Plasma-Sprayed Al2O3-3%TiO2 Coatings Doped with CeO2
文献类型：期刊论文
| 作者 | Zhang, Yu2; Sun, Shilong2; Zhao, Lin3; Yang, Changdi2,4; Wu, Liping3; Guo, Yingjie2; Ang, Andrew Siao Ming1 |
| 刊名 | JOURNAL OF THERMAL SPRAY TECHNOLOGY
 |
| 出版日期 | 2022-11-08 |
| 页码 | 16 |
| ISSN号 | 1059-9630 |
| 关键词 | Al2O3-3%TiO2 coating corrosion behavior plasma spray rare earth element |
| DOI | 10.1007/s11666-022-01484-z |
| 通讯作者 | Zhao, Lin(zhaolin@imr.ac.cn) |
| 英文摘要 | Coatings of Al2O3-3%TiO2 (AT3) and CeO2-doped Al2O3-3%TiO2 (1 wt% and 5 wt%) were prepared by plasma spraying. Scanning electron microscopy revealed that CeO2 was mainly distributed in the crevices and between the splat layers of the coating, filling the voids or spaces, and reducing the porosity of the coating. The coating phase was predominantly alpha-Al2O3, and the addition of rare earth oxide reduced the formation of gamma-Al2O3 in the coating. Cyclic polarization measurements showed that the pitting loop did not appear in the cyclic polarization curve of the coating when the rare earth oxide CeO2 content increased to 5 wt%, and the current density of the backward scanning was lower than that of the forward scanning. The results confirmed the higher compactness of the AT3 + 5%CeO2 structure, which can prevent the penetration of chloride ions, thus avoiding pitting. The electrochemical impedance spectroscopy results showed that the amplitude of the low-frequency impedance of Al2O3-3%TiO2-5%CeO2 was the highest compared to other coatings, which confirms that its corrosion resistance is the best in solution. The results of Mott-Schottky measurements showed that the number of gaps in the passive film of the coating decreased with CeO2 doping. With the increase of the doped rare earth content, the capacitance of the ceramic coating increases, which reduces the corrosion rate and improves the corrosion resistance of the coating. |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000880255600002 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/176611]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhao, Lin |
| 作者单位 | 1.Swinburne Univ Technol, ARC Ind Transformat Training Ctr Surface Engn Adv, Hawthorn, Vic 3122, Australia 2.Shenyang Univ, Sch Mech Engn, Shenyang 110044, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Fushun New Steel Co Ltd, H Beam Project Dept, Fushun 113001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yu,Sun, Shilong,Zhao, Lin,et al. Corrosion Behavior of Plasma-Sprayed Al2O3-3%TiO2 Coatings Doped with CeO2[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2022:16. |
| APA | Zhang, Yu.,Sun, Shilong.,Zhao, Lin.,Yang, Changdi.,Wu, Liping.,...&Ang, Andrew Siao Ming.(2022).Corrosion Behavior of Plasma-Sprayed Al2O3-3%TiO2 Coatings Doped with CeO2.JOURNAL OF THERMAL SPRAY TECHNOLOGY,16. |
| MLA | Zhang, Yu,et al."Corrosion Behavior of Plasma-Sprayed Al2O3-3%TiO2 Coatings Doped with CeO2".JOURNAL OF THERMAL SPRAY TECHNOLOGY (2022):16. |
入库方式： OAI收割
来源：金属研究所
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