【摘要】 针对铜极易被含Cl^-溶剂腐蚀的问题,以NaOH和（NH₄）₂S₂O₈的混合水溶液为氧化剂、十七氟癸基三甲氧基硅烷（FAS-17）为低表面能改性剂,在铜表面制备得到超疏水涂层。利用X射线衍射（XRD）、扫描电子显微镜（SEM）、X射线光电子能谱（XPS）对涂层表面的结构、形貌及组成进行了表征,通过Tafel极化曲线和EIS谱图分析了样品在3.5%（质量分数,下同）NaCl溶液中的防腐蚀特性。结果表明:浸渍10 min的铜表面生长出了致密均匀的CuO纳米线结构;化学改性后表面的水接触角（CA）大于160°,滚动角（SA）小于3°。相比裸铜基板,生长有超疏水CuO纳米线结构的表面表现出较低的腐蚀电流密度(I_corr=3.285×10^-6 A/cm²),抑制腐蚀的效率达到99.65%,而且在3.5%NaCl溶液中浸泡6 d仍保持超疏水性。与当前使用缓蚀剂抑制铜腐蚀的方法相比,文中方法更加环保且廉价。更多还原

【Abstract】 Superhydrophobic coating on the copper surface was prepared with a mixed aqueous solution of NaOH and（NH₄）₂S₂O₈ as oxidant and heptafluorodecyltrimethoxysilane（FAS-17） as a low surface energy modifier to solve the problem that metal copper is easily corroded in a solution containing Cl^-. The structure, morphology and composition of the coating were characterized by X-ray diffraction analysis（XRD）, scanning electron microscopy（SEM） and X-ray photoelectron spectroscopy（XPS）. The corrosion resistance of samples was analyzed by Tafel polarization curve and EIS spectrum in 3.5%（mass fraction, the same below） NaCl solution. The results show that, after being immersed in NaCl solution for 10 min, a dense and uniform CuO nanowire structure grows on the surface of the copper. The contact angle（CA） of the chemically modified surface is greater than 160° and the sliding angle（SA） is less than 3° for deionized water. Compared with bare Cu substrates, surfaces with super-hydrophobic CuO nanowires exhibit a lower corrosion current density(I_corr=3.285×10^-6 A/cm²), and the corrosion resistance efficiency reaches 99.65%. And after being soaked in 3.5% NaCl solution for 6 days, the surfaces still own super-hydrophobicity. Compared with the current method of using corrosion inhibitors to inhibit copper corrosion, the proposed method is more environmentally friendly and cheaper.更多还原