电沉积参数对Cr2O3超疏水膜层表面形貌和润湿性的影响

Influence of Electrodeposition Conditions on the Surface Morphology and Wettability of Cr2O3 Super-hydrophobic Layer

中文关键词:  电沉积  硬脂酸修饰  超疏水  接触角  滚动角

英文关键词:Electrodeposition  Modified by stearic acid  Superhydrophobic  Static contact angle  Rolling angle

中文摘要:

      采用电沉积法在碳钢片表面制备Cr₂O₃微纳膜层,并用硬脂酸对其进行表面修饰,降低其表面能。通过单因素法依次优化电流密度、铬酸浓度、极间距和电沉积时间,分析所得Cr₂O₃超疏水膜层的表面形貌和润湿性。当电流强度为4A、铬酸浓度为1.5 mol/L、极间距为5 mm及电沉积时间为1 h时,经硬脂酸修饰后Cr₂O₃膜层的超疏水性能优异,其静态接触角达到153.52°,且滚动角为2.17°。

英文摘要:

      The micro/nano film of Cr₂O₃ was prepared on the surface of carbon steel sheet by electrodeposition method,then its surface energy was reduced by surface modification with stearic acid.The current density,chromic acid concentration,electrode spacing and the time of electrodeposition were optimized by single factor method,while the surface morphology and wettability of the obtained superhydrophobic films were analyzed.When the current intensity is 4A,the concentration of chromic acid 1.5 mol/L,the electrode spacing 5 mm and the electrodeposition time 1 h,the superhydrophobic performance of the Cr₂O₃ films modified by stearic acid is excellent while the static contact angle reaches 153.52° and the rolling angle is 2.17°.