电沉积法制备低碳钢超疏水表面及其耐蚀性能

Electrochemical Fabrication of Superhydrophobic Surfaces on Mild Steel and Evaluation of the Anti-Corrosion Property of the Surfaces

电沉积法制备超疏水表面优势明显,但施加电压较高。采用一步快速电沉积法在低碳钢表面制备超疏水膜,测试了超疏水膜的接触角、形貌,通过动电位极化曲线研究了超疏水膜在3.5%NaCl溶液中的耐蚀性能,优选了超疏水膜的制备工艺。结果表明:超疏水膜最佳制备工艺条件为电解液组成0.20mol/L硬脂酸+0.1%HCl,电沉积电压8V,电沉积时间16h;最优工艺所制备的超疏水膜接触角达到了153°,在3.5%NaCl溶液中的缓蚀效率高达99.1%。

Superhydrophobic films were prepared on the Q235 mild steel surface by rapid electrodeposition method,and the contact angle and morphology of films were analyzed. Moreover,the corrosion resistance of the obtained superhydrophobic films in 3.5% Na Cl solution was evaluated by potentiodynamic polarization curves,and the preparing conditions were optimized. Results showed that the optimal preparing conditions were 0.20 mol/L stearic acid+0.1% HCl solution,8 V of electrodeposition voltage and 16 h of electrodeposition time. The contact angle of the superhydrophobic surface obtained at the optimal conditions was 153° and the corrosion inhibition efficiency in 3.5% Na Cl solution reached 99.1%.