材料科学
介电谱
热重分析
涂层
盐雾试验
纳米颗粒
傅里叶变换红外光谱
腐蚀
介孔二氧化硅
化学工程
环氧树脂
扫描电子显微镜
胶粘剂
能量色散X射线光谱学
介孔材料
复合材料
核化学
电化学
纳米技术
有机化学
化学
电极
催化作用
物理化学
工程类
图层(电子)
作者
Bruno Židov,Zhifeng Lin,Ivan Stojanović,Likun Xu
摘要
Abstract This article is a contribution to the development of the smart, self‐healing solutions in the context of corrosion protection of metallic materials based on nanotechnology. Mesoporous silica nanoparticles were successfully synthesized and loaded with two different corrosion inhibitors, 1‐hydroxybenzotriazole and 8‐hydroxyquinoline. Loaded particles were embedded in different concentrations in waterborne epoxy coating, and as such applied to low carbon steel substrates. A continuous immersion test in 3.5% NaCl solution, humidity chamber exposure, and salt spray exposure were performed. Successful synthesis of silica nanoparticles has been demonstrated using scanning electron microscopy and energy‐dispersive X‐ray spectroscopy characterization techniques. Fourier transform infrared spectroscopy was used to confirm the loading of inhibitors, while the quantity of loaded inhibitors was determined by thermogravimetric method. Anticorrosive performance of intact composite coatings was determined using electrochemical impedance spectroscopy and open‐circuit potential measurements. Adhesive properties were determined using the pull‐off test (ISO 4624). Significant improvement in corrosion protection performance has been demonstrated for coatings containing inhibitor‐loaded nanoparticles.
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