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首页> 外文期刊>International Journal of Electrochemical Science >Corrosion Protection of Stainless Steel by Triethoxyoctylsilane and Tetraethoxysilane
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Corrosion Protection of Stainless Steel by Triethoxyoctylsilane and Tetraethoxysilane

机译：三乙氧基辛基硅烷和四乙氧基硅烷对不锈钢的腐蚀防护

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摘要

Different methods of silane coating deposition on the surface of 304 stainless steel were studied.Deposition was performed in different solutions with a variety of pH values. Three types of solutionswere prepared i.e. neutral, containing only methanol with triethoxyoctylsilane and two acidicconsisting of methanol, triethoxyoctylsilane, tetraethoxysilane and hydrochloric acid which was usedto establish pH values equal to 1 and 3.5. Surface electrochemical analysis carried out using a 3.5 wt%NaCl solution and several common techniques including corrosion potential monitoring at open circuitconditions, linear polarization and electrochemical impedance spectroscopy tests showed that the wayin which silane solution is prepared and silane coating is deposited is heavily influencing on the type ofcorrosion inhibition. Additionally, spectroscopic methods were employed. Due to oxide passive filmon the steel surface, metal-O-Si bonds are formed, thus creating an intermediate layer between theoxide layer and the outermost siloxane layer (Si-O-Si). Furthermore, a long aliphatic chain oftriethoxyoctylsilane compound increases steel surface hydrophobicity.
机译：研究了在304不锈钢表面上进行硅烷涂层沉积的不同方法。在具有各种pH值的不同溶液中进行沉积。制备了三种类型的溶液，即中性溶液，仅含有甲醇和三乙氧基辛基硅烷，以及由酸性组成的甲醇，三乙氧基辛基硅烷，四乙氧基硅烷和盐酸这两种酸性溶液，用于建立等于1和3.5的pH值。使用3.5 wt％NaCl溶液和几种常用技术进行的表面电化学分析包括开路条件下的腐蚀电势监测，线性极化和电化学阻抗谱测试表明，制备硅烷溶液和沉积硅烷涂层的方式严重影响了硅橡胶的表面。腐蚀抑制类型。另外，采用了光谱方法。由于在钢表面上形成了氧化物钝化膜，因此形成了金属-O-Si键，从而在氧化物层和最外层的硅氧烷层（Si-O-Si）之间形成了中间层。此外，三乙氧基辛基硅烷化合物的长脂肪链增加了钢表面的疏水性。

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