Preparation and Corrosion Protection Properties of Nanometer SiO2 Composite Coating

摘要：

Lipophilic SiO2 nanoparticles were prepared by surface modification with silane coupling agent (A858). Scanning electron microscope (SEM) and atomic force microscopy (AFM) images showed that the particle size of SiO2 was about 40 ～ 80 nm and dispersed uniformly. Using stirring and ultrasonic dispersing, nano-SiO2 composite coating was obtained by adding modified nano-SiO2 into lacquer. Electrochemical impedance spectroscopy (EIS), anodic polarization curves and immersion measurements were used to evaluate the corrosion performances of the composite coatings applied on steel in NaCl solution. The results showed that the anti-corrosion performance of composite coating in NaCl solution was improved remarkably, and the composite coating with 0.91 wt％ SiO2 nanoparticles had the best corrosion resistance.

关键词： SiO2 nanoparticle Lacquer Composite coating Corrosion performance NaCl solution

作者: 张卫国 肖蕴 李林 姚素薇

作者单位: 天津大学化工学院,杉山表面技术研究室,天津,300072

会议类型: 国际会议

会议名称: 第六届中国国际纳米科技研讨会

会议地点: 成都

会议语种:英文

在线出版日期: 2007-11-19（万方平台首次上网日期，不代表论文的发表时间）