Enhancement of the erosion-corrosion resistance of Dacromet with hybrid SiO2 sol-gel

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	Enhancement of the erosion-corrosion resistance of Dacromet with hybrid SiO2 sol-gel
	J. G. Liu; G. P. Gong; C. W. Yan
	2006
发表期刊	Surface & Coatings Technology
ISSN	0257-8972
卷号	200 期号:16-17 页码:4967-4975
摘要	A hybrid SiO2 gel/Dacromet composite coating system was designed and prepared by brushing technique from nano-scale organofunctional silica sol oil Dacromet-coated carbon steel to enhance the erosion-corrosion resistance of the Dacromet. This particular silica sol was synthesized by the acid catalyzed hydrolysis with TEOS (tetraethoxysilane) and gamma-MAPTS (gamma-Methacryloxypropyltrimethoxysilane) in an ethanol medium. The silica particles showed a characteristic shape due to the intertwisting of the organic chain. The hybrid SiO2 gel/Dacromet composite coating system exhibited a mass loss rate with 4.5 times lower than that of single Dacromet in the simplified industrial medium (3.5% NaCl, 35 wt.% sand and distilled water). A crack-free surface was observed for the hybrid SiO2 gel/Dacromet system due to the incorporation of an organic group during the preparation process so as to produce a restrained synergistic effect of erosion and corrosion. The nano-particles in SiO2 sols did enter into the micro-defects of Dacromet as confirmed by SEM. The change in IR spectra indicated a chemical covalent bond between the gel film and Dacromet through certain reactions. The electrochemical measurement showed that the composite system also presented a longer controlled cathodic protection than that of Dacromet and ail enhanced corrosion resistance for Dacromet. (c) 2005 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst met res, state key lab corros & protect, grad sch, shenyang 110016, peoples r china.;liu, jg (reprint author), chinese acad sci, inst met res, state key lab corros & protect, grad sch, 62 wencui rd, shenyang 110016, peoples r china;jgliu@imr.ac.cn
关键词	Dacromet Erosion-corrosion Resistance Hybrid Sol-gel Gamma-mapts Composite Coatings 2024-t3
URL	查看原文
WOS记录号	WOS:000236590300041
引用统计	被引频次：44[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34360
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. G. Liu,G. P. Gong,C. W. Yan. Enhancement of the erosion-corrosion resistance of Dacromet with hybrid SiO2 sol-gel[J]. Surface & Coatings Technology,2006,200(16-17):4967-4975.
APA	J. G. Liu,G. P. Gong,&C. W. Yan.(2006).Enhancement of the erosion-corrosion resistance of Dacromet with hybrid SiO2 sol-gel.Surface & Coatings Technology,200(16-17),4967-4975.
MLA	J. G. Liu,et al."Enhancement of the erosion-corrosion resistance of Dacromet with hybrid SiO2 sol-gel".Surface & Coatings Technology 200.16-17(2006):4967-4975.