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首页> 外文期刊>Boletin de la Sociedad Espanola de Ceramica y Vidrio >Synthesis and corrosion resistance evaluation of coatings of SiO2-TiO2-ZrO2-BiO2 on 316L stainless produced by sol-gel
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Synthesis and corrosion resistance evaluation of coatings of SiO2-TiO2-ZrO2-BiO2 on 316L stainless produced by sol-gel

机译：溶胶 - 凝胶316L不锈钢涂层的合成与耐腐蚀评价

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摘要

This report show the synthesis and corrosion resistance of SiO2-TiO2-ZrO2-BiO2 coatings deposited by spin-coating on AISI 316L stainless steel. The soles were prepared from a mixture of organic precursors, such as 98% tetraethoxysilane (TEOS), titanium tetrabutoxide (TBT) 97%, Zirconium (IV) butoxide (TBZ) 80% in 1-butanol solution and bismuth penta nitrate-hydrate Bi (NO3)(3)*5H(2)O. The coatings were evaluated by potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS) test in an electrolytic solution of 3.5% Wt NaCl + 0.5 MH2SO4. The soles prepared were studied trough rheological, pH as a time function, Fourier Transform Infrared Spectroscopy (FTIR) and differential scanning calorimetry (DSC) analysis. The coating were characterized by X ray diffraction (XRD), scanning electron microscopy (SEM) and dispersive energy spectroscopy (EDX), X ray fluorescence (XRF) and adhesion measurements. The results showed that the films offer good corrosion resistance on the metal substrate, decreasing current densities up to one order of magnitude. (C) 2018 SECV. Published by Elsevier Espana, S.L.U.
机译：本报告显示SiO2-TiO2-ZrO2-Bio2涂层的合成和耐腐蚀性通过旋涂在AISI 316L不锈钢上沉积的涂层。由有机前体的混合物制备鞋底，例如98％四乙氧基硅烷（TEOS），四丁醇钛（TBT）97％，锆（IV）丁氧化钛（TBZ）80％在1-丁醇溶液和铋戊酸铋 - 水合物BI中（no3）（3）* 5h（2）o。通过在3.5％wt NaCl + 0.5mH 2 SO 4的电解液中进行电解溶液和电化学阻抗光谱（EIS）试验评价涂层。研究了所制备的鞋底，将槽流变，pH作为时间函数，傅里叶变换红外光谱（FTIR）和差示扫描量热法（DSC）分析。通过X射线衍射（XRD），扫描电子显微镜（SEM）和分散能谱（EDX），X射线荧光（XRF）和粘附测量涂层。结果表明，薄膜在金属基板上提供良好的耐腐蚀性，降低电流密度高达一种数量级。 （c）2018 SECV。 elsevier espana发布，s.l.u。

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