Comparative Study of the Corrosion Resistance of Air-Plasma-Sprayed Ca2SiO4 and Al2O3 Coatings in Salt Water
文献类型：期刊论文
| 作者 | Xiao, Yuan1; Shao, Fang; Zhuang, Yin; Ni, Jinxing; Zhao, Huayu; Tao, Shunyan |
| 刊名 | COATINGS
 |
| 出版日期 | 2018 |
| 卷号 | 8期号:4 |
| 关键词 | dicalcium silicate coating alumina coating hydration passivation film corrosion resistance |
| ISSN号 | 2079-6412 |
| DOI | 10.3390/coatings8040116 |
| 英文摘要 | In this study, Ca2SiO4 coating was sprayed on stainless steel substrate and the corrosion resistance of the as-sprayed coating was studied in salt water. At the same time, Al2O3 coatings were produced by air-plasma-sprayed technology as comparison. Immersion test was carried out to evaluate the protection performance of coatings. Potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) plots were also analyzed. The results indicated that Ca2SiO4 coatings showed a better protection performance than Al2O3 coatings. During the immersion, various calcium carbonate crystals appeared on the surface of Ca2SiO4 coatings. Ca(OH)(2) was released from Ca2SiO4 coatings into NaCl aqueous solution, increasing the alkalinity, which is in favor of the formation of passivation film, and thus improves the corrosion resistance. Ca2SiO4 coatings became denser after immersion due to the fact that the pores and micro cracks were filled with hydration products i.e., hydrated calcium silicate (C-S-H) gel. On the contrary, the microstructure of Al2O3 coatings became loose and obvious rusty spots were observed on the surface after the immersion test. |
| 学科主题 | Materials Science, Coatings & Films |
| WOS记录号 | WOS:000435187300001 |
| 出版者 | MDPI |
| 资助机构 | This work was supported by the National Natural Science Foundation (NSFC) under Grant No. 51701235. Simultaneously, we are grateful to Shigang Xin and Yuzhi Zhang for providing the support for this work. ; This work was supported by the National Natural Science Foundation (NSFC) under Grant No. 51701235. Simultaneously, we are grateful to Shigang Xin and Yuzhi Zhang for providing the support for this work. |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25017]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat CAS, Shanghai 201899, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Yuan,Shao, Fang,Zhuang, Yin,et al. Comparative Study of the Corrosion Resistance of Air-Plasma-Sprayed Ca2SiO4 and Al2O3 Coatings in Salt Water[J]. COATINGS,2018,8(4). |
| APA | Xiao, Yuan,Shao, Fang,Zhuang, Yin,Ni, Jinxing,Zhao, Huayu,&Tao, Shunyan.(2018).Comparative Study of the Corrosion Resistance of Air-Plasma-Sprayed Ca2SiO4 and Al2O3 Coatings in Salt Water.COATINGS,8(4). |
| MLA | Xiao, Yuan,et al."Comparative Study of the Corrosion Resistance of Air-Plasma-Sprayed Ca2SiO4 and Al2O3 Coatings in Salt Water".COATINGS 8.4(2018). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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。