Study on anti-corrosion performance of silica fume modified magnesium potassium phosphate cement-based coating on steel

被引：18
|
作者：
Wang, Bo [1 ]
Lu, Kailong [1 ]
Han, Chao [1 ]
Wu, Qing [1 ]
机构：
[1] Jiangsu Univ Sci & Technol, Coll Civil Engn & Architecture, Zhenjiang 212000, Peoples R China
来源：
CASE STUDIES IN CONSTRUCTION MATERIALS | 2022年 / 17卷
关键词：
Magnesium potassium phosphate cement; (MKPC) coating; Resistance to corrosion of steel; Silica fume modification; Electrochemistry; RAPID REPAIR; RESISTANCE; CONCRETE; BINDER;
D O I：
10.1016/j.cscm.2022.e01467
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In order to explore the anti-corrosion performance of magnesium potassium phosphate cement (MKPC) coating on steel, and the effect of silica fume with different contents on anti-corrosion ability of MKPC coating, electrochemical tests on the uncoated steel plate sample, MKPC coating sample, and silica fume modified MKPC coating samples were carried out in 3.5% sodium chloride solution. The micromorphology and phase composition of MKPC coating sample and silicon fume modified MKPC coating sample were studied by SEM-EDS and XRD tests, as well as the anti-corrosion mechanism. The results show that MKPC-based anti-corrosion coating has good anti-corrosion effect. After the modification of silica fume, the anti-corrosion ability of MKPC coating is greatly improved, when the content of silica fume is 20% of the mass of the magnesium oxide in the gelling system, the corrosion resistance of the coating is optimal.
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页数：14
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