Construction of superhydrophobic film on the titanium alloy welded joint and its corrosion resistance study

Abstract

Purpose

This study aims to improve the corrosion resistance of TA2-welded joints by superhydrophobic surface modification using micro-arc oxidation technology and low surface energy substance modification.

Design/methodology/approach

The microstructure and chemical state of the superhydrophobic film layer were analyzed using scanning electron microscopy, energy dispersive X-ray spectroscopy, three-dimensional morphology, X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared absorption spectroscopy. The influence of the superhydrophobic film layer on the corrosion resistance of TA2-welded joints was investigated using classical electrochemical testing methods.

Findings

The characterization results showed that the super hydrophobic TiO₂ ceramic membrane was successfully constructed on the surface of the TA2-welded joint, and the construction of the super hydrophobic film greatly improved the corrosion resistance of the TA2-welded joint.

Originality/value

The superhydrophobic TiO₂ ceramic membrane has excellent corrosion resistance. The micro nanostructure in the superhydrophobic film can intercept air to form an air layer to prevent the corrosion medium from contacting the surface, thus, improving the corrosion resistance of the sample.

Citation

Zhang, D., Zhang, X., Wei, E., Dou, X. and He, Z. (2023), "Construction of superhydrophobic film on the titanium alloy welded joint and its corrosion resistance study", Anti-Corrosion Methods and Materials, Vol. 70 No. 6, pp. 328-340. https://doi.org/10.1108/ACMM-05-2023-2812