溶胶-凝胶法制备超疏水性纳米复合防腐涂层

doi:10.11902/1005.4537.2013.146

中国腐蚀与防护学报

2014, Vol. 34

Issue (3): 257-264 DOI: 10.11902/1005.4537.2013.146

本期目录 | 过刊浏览

溶胶-凝胶法制备超疏水性纳米复合防腐涂层

尹成勇, 李澄(

), 彭晓燕, 王加余, 王艳慧, 郑顺丽, 李敏, 胡玮

南京航空航天大学材料科学与技术学院南京 210016

Performance of Superhydrophobic Nano Complex Anti-corrosion Coating Fabricated by Sol-gel Technique

YIN Chengyong, LI Cheng(

), PENG Xiaoyan, WANG Jiayu, WANG Yanhui, ZHENG Shunli, LI Min, HU Wei

College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

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摘要:

通过溶胶-凝胶旋涂法在不锈钢基底上制备了具有超疏水性能的介孔碳复合SiO₂涂层。通过TEM,SEM及静态接触角、电化学测试技术 (Tafel和EIS) 等对其结构、疏水性能和耐蚀性等进行表征。结果表明：在不锈钢基底上形成了乳突状形貌,水在涂层表面静态接触角达到163°。该超疏水性SiO₂/介孔碳复合涂层具有优良的防腐性能。

关键词 ：超疏水, 溶胶-凝胶, 复合涂层, 防腐蚀

Abstract：

Superhydrophobic complex coatings of mesoporous carbon/silica on stainless steel were prepared by a sol-gel spin cast method. The morphologies, anticorrosion property and hydrophobicity of the coatings were characterizd by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM), electrochemical test technique-Tafel curve and electrochemical impedance spectroscopy, as well as water contact angle measurement (CA) respectively. The coatings exhibited varied surface morphologies with bump-like and nipple-like protrusions on the stainless steel substrate. The coatings had a high water contact angle larger than 163°, indicating its strong hydrophobicity. The corrosion current density of the superhydrophobic complex coating coated steel was 8 order of magnitude lower than the bare steel, while its charge transfer resistance (R_ct) was 6 order of magnitude higher as well, implying an excellent corrosion protectiveness. Besides, an electrochemical equivalent circuit was proposed to interpret the relevant anti-corrosion mechanism for the superhydrophobic coatings.

Key words： superhydrophobic sol-gel complex coating anticorrosion

收稿日期: 2013-08-12

ZTFLH:

TG174.4

基金资助:南航-中联科技电子新材料联合实验室基金项目资助

作者简介: null

尹成勇，男，1987年生，硕士生，研究方向为金属电化学腐蚀与防护

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引用本文:

尹成勇, 李澄, 彭晓燕, 王加余, 王艳慧, 郑顺丽, 李敏, 胡玮. 溶胶-凝胶法制备超疏水性纳米复合防腐涂层[J]. 中国腐蚀与防护学报, 2014, 34(3): 257-264.
Chengyong YIN, Cheng LI, Xiaoyan PENG, Jiayu WANG, Yanhui WANG, Shunli ZHENG, Min LI, Wei HU. Performance of Superhydrophobic Nano Complex Anti-corrosion Coating Fabricated by Sol-gel Technique. Journal of Chinese Society for Corrosion and protection, 2014, 34(3): 257-264.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2013.146 或 https://www.jcscp.org/CN/Y2014/V34/I3/257

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表1 不同试样的腐蚀电流密度、极化电阻和腐蚀电位的拟合结果

图7

图8

表2 3种试样在模拟腐蚀环境中的电化学阻抗分析结果

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图11

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