盐溶液刻蚀-氟化处理制备X65管线钢镀镍超双疏表面及其耐蚀性研究

Fabrication of Superamphiphobic Surface for Nickel-plate on Pipeline Steel by Salt Solution Etching and Its Anti-corrosion Properties

通过盐溶液对X65管线钢镀镍表面进行化学刻蚀,然后经过全氟辛基三氯硅烷修饰,成功地在基底上制备出了超疏水疏油性能的表面,并通过电化学测试研究了双疏表面的耐腐蚀性能。结果表明:含钴镍离子的溶液80℃恒温刻蚀6 h后,再经过全氟辛基三氯硅烷修饰2 h,得到了与去离子水、乙二醇的接触角分别为160°和152°的超双疏表面。相较于镀镍试样表面,极化曲线表明超双疏表面的腐蚀速率明显降低,电化学阻抗测试图谱表明超双疏表面的耐蚀性得到了提高。

A Ni-plate was firstly electrodeposited on X65 pipeline steel surface,which then was chemically etched by salt solution,and finally subjected to modification treatment with perfluorohexylethyltrichlorosilane,so that the surface of Ni-plate was endowed with super-hydrophobic and oil-phobic performance.The corrosion behavior of the modified Ni-plate was studied by potentiodynamic scanning.The result showed that after being etched for 6 h at 80℃in the solution containing cobalt and nickel ions,and modified with perfluorooctyltrichlorosilane for 2 h,the modified Ni-plate surface presented contact angles of 160°and 152°for deionized water and glycol respectively.Compared with the original Ni-plate surface,the modified ones presented significantly lower corrosion rate,namely,better corrosion resistance.