Preparation and corrosion resistance of highly adhesive superhydrophobic surface

doi:10.13251/j.issn.0254-6051.2022.02.035

Abstract

Abstract: Co-Ni transition layer was prepared on carbon steel substrate using electrochemical deposition, then Cr coating was deposited on the Co-Ni transition layer by double glow plasma surface alloying technique (DGPSA). After modification by PFTEOS solution, a superhydrophobic coating with high adhesion was prepared. The morphology, phase composition, wetting performance, adhesion property and corrosion resistance of the coating were characterized by means of scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffractometer (XRD), X-ray photoelectron spectrometer (XPS), contact angle measuring instrument and electrochemical test, respectively. The influence of deposition time of DGPSA technique on surface morphology and wetting performance was explored. The results show that the superhydrophobic surface with a papillary structure and high adhesion is prepared under the deposition temperature of 750 ℃ for 30 min. The water contact angle reaches 159° and the water droplet don't roll off even if the specimen is tilted 180°. The electrochemical test results demonstrate that the as-prepared superhydrophobic surface exhibits excellent corrosion protection for carbon steel substrate.

Key words: surface alloying, electrochemical deposition, superhydrophobic surface, high adhesion, corrosion resistance

CLC Number:

TB304

Lin Hongchun, Ma Dandan, Yu Shengwang, Ma Yong, Zhou Bing, Gao Jie, Hei Hongjun, Xue Yanpeng. Preparation and corrosion resistance of highly adhesive superhydrophobic surface[J]. Heat Treatment of Metals, 2022, 47(2): 193-199.

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