混酸刻蚀制备X80 钢超疏水涂层及其耐蚀性研究

为了提升X80钢表面的疏水能力，有效减轻钢的腐蚀倾向，通过混酸刻蚀+低能修饰处理方法在X80钢基体表面制备超疏水涂层，研究了不同刻蚀时间对疏水角的影响，并利用电化学试验与盐水浸泡试验分析了超疏水X80钢的耐蚀性。结果显示:X80钢表面经过混酸刻蚀法处理后，表面涂层致密；随着刻蚀时间的增长，疏水角先增大后减小，刻蚀时间60 min时可实现最大130°疏水角具有超疏水涂层的X80钢耐蚀性明显提高。研究表明，混酸刻蚀法可以在X80钢表面构造超疏水涂层，可有效提升基体耐蚀性。

Preparation and Corrosion Resistance Study of Superhydrophobic Coating on X80 Steel by Mixed Acid Etching

In order to improve the hydrophobic ability of X80 steel surface and effectively reduce the corrosion tendency of steel, superhydrophobic coating was prepared on the surface of X80 steel by mixed acid etching and low energy modification treatment. The effect of different etching time on the hydrophobic angle was studied, and the corrosion resistance of superhydrophobic X80 steel was analyzed by electrochemical test and brine immersion test.The results show that the surface coating of X80 steel is dense after mixed acid etching treatment.With the etching time increasing, the hydrophobic Angle first increases and then decreases, and the maximum hydrophobic Angle is 130° when the etching time is 60 min.The corrosion resistance of X80 steel with superhydrophobic coating is significantly improved. The research show that the mixed acid etching method can construct superhydrophobic coating on the surface of X80 steel, which can effectively improve the corrosion resistance of the matrix.