The synergistic effect of Ce3+ and SiO₂ nanoparticles (NPs) composite silane film on the corrosion resistance of carbon steel was researched. The preparation method of silane film is mainly hydrolysis of bis-1,2-(triethoxysilyl)ethane (BTSE) and 3-glycidoxypropyltrimethoxysilane (KH-560) under acidic conditions and condensation reaction. EDX and SEM were employed to analyze the element distribution and morphological characteristics of the coating, which confirmed the coatings were crack-free and even distribution of surface elements. The chemical bond structure characteristics of the silane film on carbon steel were analyzed by XPS, and compared with the silane film after ultrasound. It proved the bonding force of the silane film. The best corrosion current density of the silane film containing cerium is 4.65 μAcm−2. The Rct obtained by simulating the corrosion circuit through Zsimpwin software is 22.02kΩcm−2. On this basis, by adding different concentrations of SiO₂ NPs, the corrosion current density can reach a minimum of 0.70 μAcm−2. The simulated polarization curve Rct was 65.13kΩcm−2. In the long-term open-circuit potential test, the potential of the silane film containing rare earth cerium increased to 38mV at a certain stage, which proves the self-healing performance of the film.

中文翻译：

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REC-SiO2硅烷膜在碳钢上的防腐和修复性能

Ce的协同作用3+研究了SiO ₂纳米粒子(NPs)复合硅烷膜对碳钢耐蚀性的影响。硅烷膜的制备方法主要是双-1,2-(三乙氧基甲硅烷基)乙烷(BTSE)和3-环氧丙氧基丙基三甲氧基硅烷(KH-560)在酸性条件下水解和缩合反应。采用EDX和SEM分析镀层的元素分布和形貌特征，证实镀层无裂纹，表面元素分布均匀。采用XPS分析碳钢上硅烷膜的化学键结构特征，并与超声后的硅烷膜进行比较。证明了硅烷膜的结合力。含铈硅烷膜的最佳腐蚀电流密度为4.65μ厘米-2. 这Rct通过Zsimpwin软件模拟腐蚀电路得到22.02ķΩ厘米-2. 在此基础上，通过添加不同浓度的SiO ₂ NPs，腐蚀电流密度最小可以达到0.70μ厘米-2. 模拟极化曲线Rct是 65.13ķΩ厘米-2. 在长期开路电位测试中，含稀土铈的硅烷薄膜电位升高到38mV在某一阶段，证明了薄膜的自愈性能。