电沉积法制备316L不锈钢表面微纳结构超疏水涂层及其耐海水腐蚀性能
Preparation of Super-Hydrophobic Coating with Micro-Nano Structure by Electrodeposition and Its Corrosion Resistance to Seawater
摘 要
采用电沉积方法在316L不锈钢表面制备了微纳结构的超疏水涂层。利用扫描电子显微镜（SEM）和表面接触角测量仪研究表面结构与亲水性之间的关系，利用电化学阻抗谱和动电位极化曲线研究超疏水涂层在模拟海水中的耐蚀性。结果表明：第一次电沉积后316L不锈钢表面呈金字塔结构的尖锥体形貌，第二次电沉积后转变成花瓣状微纳结构；二次电沉积制备的涂层与水的静态接触角达153.74°，表现出超疏水性能，耐海水腐蚀性能与316L不锈钢的相当，但其微纳结构降低了发生点蚀的风险。
超疏水
微纳结构
electrodeposition
super-hydrophobic property
micro-nano structure
Abstract
Electrodeposition was used to prepare a super-hydrophobic coating with micro-nano structure on the surface of 316L stainless steel. The relationship between wetting ability and surface structure was studied by scanning electron microscopy (SEM) and surface contact angle measurement. And the corrosion resistance of super-hydrophobic coating in simulated seawater was studied by electrochemical impedance spectrum and dynamic potential polarization curve. The results show that the deposition morphology on the surface of 316L stainless steel changed from cone with pyramid structure after the first electrodeposition to micro-nano petallike structure after the second electrodeposition. The static contact angle of the coating prepared by two electrodepositions to water reached 153.74°, presenting the best super-hydrophobic property. The super-hydrophobic coating had corrosion resistance comparable to that of 316L stainless steel, and its micro-nano structure reduced the possibility of pitting corrosion.
中图分类号 TG174 DOI 10.11973/fsyfh-201810003
所属栏目 试验研究
基金项目 国家自然科学基金（81572113，51501218，51401092）；广东省自然科学基金博士启动基金（2014A030310129）；深圳基础研究项目（JCYJ20160608153641020）；深圳市孔雀团队项目（110811003586331）
收稿日期 2017/6/8
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引用该论文: JIANG Bin,ZENG Lilan,LIANG Tao,PAN Haobo,QIAO Yanxin,ZHAO Ying. Preparation of Super-Hydrophobic Coating with Micro-Nano Structure by Electrodeposition and Its Corrosion Resistance to Seawater[J]. Corrosion & Protection, 2018, 39(10): 747
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【19】WANG J,LI D D,LIU Q,et al. Fabrication of hydrophobic surface with hierarchical structure on Mg alloy and its corrosion resistance[J]. Electrochimica Acta,2010,55:6897-6906.
【20】GENG W,HU A,LI M. Super-hydrophilicity to super-hydrophobicity transition of a surface with Ni micro-nano cones array[J]. Appl Surf Sci,2012,263:821-824.
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