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Investigation of effective parameters in improving corrosion resistance of silica coated stainless steel via sol-gel method

机译：溶胶-凝胶法提高二氧化硅涂层不锈钢耐蚀性的有效参数研究

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The sol-gel method has been used to deposit oxide thin films. In the present study, silica was coated on 316L stainless steel substrate through sol-gel method via dipping process. Silica sol was made in a mixture of methyltriethoxysilane (MTES), tetraethyl orthosilicate (TEOS), pure water, absolute ethanol as solvent, nitric acid, and hydrochloric acid as catalysts. The corrosion resistance of samples was investigated in simulated body fluid by a potentiodynamic test and uniformity of the coating was evaluated by scanning electron microscope. We have assessed the effective parameters, such as wetting agent, number of layers, catalyst and different roughness of sublayers on corrosion properties of samples. The silica coating resulted in improvement of corrosion resistance of 316L stainless steel in body environment, and can be used as a proper coating on orthopaedic implants.
机译：溶胶-凝胶法已被用于沉积氧化物薄膜。在本研究中，通过浸渍法通过溶胶-凝胶法将二氧化硅涂覆在316L不锈钢基底上。硅溶胶是在甲基三乙氧基硅烷（MTES），原硅酸四乙酯（TEOS），纯水，无水乙醇作为溶剂，硝酸和盐酸作为催化剂的混合物中制得的。通过电位动力学试验研究了样品在模拟体液中的耐腐蚀性，并通过扫描电子显微镜评估了涂层的均匀性。我们评估了有效参数，例如润湿剂，层数，催化剂以及子层的不同粗糙度对样品的腐蚀性能的影响。二氧化硅涂层改善了316L不锈钢在人体环境中的耐蚀性，可用作骨科植入物的合适涂层。

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