Al2O3/有机硅/SiO2杂化涂层电化学阻抗谱研究

中国腐蚀与防护学报

2013, Vol. 33

Issue (6): 527-531

研究论文

本期目录 | 过刊浏览

Al₂O₃/有机硅/SiO₂杂化涂层电化学阻抗谱研究

刘光明杨晓东林继月田继红

南昌航空大学材料科学与工程学院南昌 330063

Electrochemical Impedance Spectroscopy of an Al₂O₃/Organosilicone/SiO₂ Hybrid Coating

LIU Guangming, YANG Xiaodong, LIN Jiyue, TIAN Jihong

School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China

全文: PDF(780 KB)

摘要: 以正硅酸乙酯 (TEOS)、甲基三乙氧基硅烷 (MTES)、二苯基二甲氧基硅烷 (DDS) 和仲丁醇铝 (ASB) 为主要原料，采用溶胶-凝胶法得到Al₂O₃/有机硅/SiO₂杂化溶胶，经100 ℃下固化12 h后得到Al₂O₃/有机硅/SiO₂杂化涂层。红外光谱研究表明，杂化涂层中形成了Al—O—Si键。采用电化学阻抗 (EIS) 研究杂化涂层在3.5%NaCl溶液中浸泡不同时间的阻抗行为，根据阻抗谱特征建立了等效电路图，结合等效电路图和拟合结果分析了杂化涂层在3.5%NaCl溶液中浸泡不同时间的耐蚀性。结果表明，其在3.5%NaCl溶液中具有良好的耐蚀性。

关键词 ：溶胶-凝胶法, Al₂O₃/有机硅/SiO₂杂化涂层, 电化学阻抗谱

Abstract：Al₂O₃/organosilicone/SiO₂ hybrid sol was prepared by the method of sol-gel with tetraethyl orthosilicate (TEOS), methyl triethoxysilane (MTES), diphenyl dimethoxy silane (DDS) and aluminium tri-sec-butoxide as raw materials. Then a hybrid coating was obtained by drying at 100 ℃ for 12 h. The result of Fourier transform infrared spectroscopy (FT-IR) showed that the Al—O—Si bond was formed in the Al₂O₃/organosilicone/SiO₂ hybrid materials. The electrochemical impedance spectroscopy (EIS) of the coating immersed in 3.5%NaCl solution for different times was studied. The equivalent circuits were established according to the impedance spectral characteristics. The corrosion resistance of the hybrid coating was discussed based on the equivalent circuit and fitted results of electrochemical impedance spectroscopy. The results indicated that the corrosion resistance of the Al₂O₃/organosilicone/SiO₂hybrid coating was excellent in 3.5%NaCl solution.

Key words： sol-gel Al₂O₃/organosilicone/SiO₂ hybrid coating electrochemical impedance
spectroscopy

收稿日期: 2012-12-24

ZTFLH:

TQ631.2

基金资助:国家自然科学基金项目 (51161022) 资助

通讯作者: 刘光明， E-mail：gemliu@126.com

作者简介: 刘光明，男，1971年生，教授，研究方向为材料的腐蚀与防护

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引用本文:

刘光明, 杨晓东, 林继月, 田继红. Al₂O₃/有机硅/SiO₂杂化涂层电化学阻抗谱研究[J]. 中国腐蚀与防护学报, 2013, 33(6): 527-531.
LIU Guangming, YANG Xiaodong, LIN Jiyue, TIAN Jihong. Electrochemical Impedance Spectroscopy of an Al₂O₃/Organosilicone/SiO₂ Hybrid Coating. Journal of Chinese Society for Corrosion and protection, 2013, 33(6): 527-531.

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2013/V33/I6/527

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