Anti-corrosion performance of aniline trimer-containing sol-gel hybrid coatings for mild steel substrate

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2018专题

	Anti-corrosion performance of aniline trimer-containing sol-gel hybrid coatings for mild steel substrate
	Liu, Zhiyong; Zhang, Dawei; Zhao, Haichao; Wang, Liping; Li, Xiaogang; Ye, Yuwei; Liu, Wei
刊名	JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
	2018
卷号	87 期号:2 页码:464-477
关键词	Stress-corrosion Cracking Silane Coatings Pipeline Steel Aluminum-alloy Carbon-steel Protection Surfaces Copper Silsesquioxane Resistance
英文摘要	Novel electroactive sol-gel hybrid coatings were synthesized by hydrolysis and condensation reaction of tetraethoxysilane (TEOS) and different mass ratios of silane-capped aniline trimer (TSUPQD) on the surface of Q235 steel. Microstructure, thermal stability, and corrosion resistance of as-prepared hybrid coatings were characterized by FTIR, UV-Vis, SEM, TGA, CA measurement, polarization curve, and electrochemical impedance spectroscopy. It could be seen that the i (corr) value of as-prepared novel coating was markedly lower than those of pure TEOS-based coating and bare substrate. EIS results indicated that the impedance of hybrid coating was higher than that of Q235 steel substrate, indicating the effective protective property for substrate. Meanwhile, the aniline trimer-based hybrid coatings presented much higher impedance after immersion in 3.5 wt% NaCl for 200 h, and the best corrosion performance was acquired when the mass ratio of TEOS/TSUPQD is 100:4. The XRD and SEM analysis of the corrosion product beneath the hybrid coatings showed that the redox catalytic capability of aniline trimer could induce the Q235 substrate to form the passive films which mainly consisted of Fe2O3 and Fe3O4. [GRAPHICS] Novel electroactive sol-gel hybrid coatings is successfully achieve in this paper. Corrosion property of aniline trimer containing hybrid coatings is obvious improved. The corrosion property is best when the mass ratio of TESO/TSUPQD is 100:4. The corrosion products mainly contain alpha-Fe2O3, alpha-Fe-2(OH)(3)Cl and Fe3O4.
学科主题	Chemistry
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17279]
专题	2018专题
推荐引用方式 GB/T 7714	Liu, Zhiyong,Zhang, Dawei,Zhao, Haichao,et al. Anti-corrosion performance of aniline trimer-containing sol-gel hybrid coatings for mild steel substrate[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY,2018,87(2):464-477.
APA	Liu, Zhiyong.,Zhang, Dawei.,Zhao, Haichao.,Wang, Liping.,Li, Xiaogang.,...&Liu, Wei.(2018).Anti-corrosion performance of aniline trimer-containing sol-gel hybrid coatings for mild steel substrate.JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY,87(2),464-477.
MLA	Liu, Zhiyong,et al."Anti-corrosion performance of aniline trimer-containing sol-gel hybrid coatings for mild steel substrate".JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY 87.2(2018):464-477.