Preparation and Properties of Fatty Acid Salt Superhydrophobic Coatings

YANG Sijie, YANG Xin, LUO Song, YANG Lansong

doi:10.16577/j.issn.1001-1560.2023.0092

Materials Protection >

2023 , Vol. 56 >Issue 4: 116 - 123

DOI: https://doi.org/10.16577/j.issn.1001-1560.2023.0092

Preparation and Properties of Fatty Acid Salt Superhydrophobic Coatings

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(1.School of Materials Science and Engineering，Sichuan University of Science ＆ Engineering，Zigong 643000，China；2.Material Corrosion and Protection Key Laboratory of Sichuan Province，Zigong 643000，China)

Received date: 2022-10-15

Revised date: 2022-11-15

Accepted date: 2022-12-17

Online published: 2023-08-04

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Abstract

In order to explore the differences of microstructure，composition and performances of different fatty acid salt superhydrophobic coatings，three kinds of fatty acid salt superhydrophobic coatings were prepared by electrodeposition on rough surface of TC4 alloy.The microstructure，chemical composition，phase and wettability of such superhydrophobic coatings were characterized and analyzed by scanning electron microscopy，X-ray diffraction，X-ray photoelectron spectroscopy，Fourier transform infrared spectroscopy and contact angle tester.The wear resistance，heat resistance and corrosion resistance of the superhydrophobic coatings were investigated by linear friction test，long time heating experiment and electrochemical experiment respectively.Results showed that fatty acid salt coatings obtained by anodic and cathodic deposition both had non-adhesion superhydrophobicity.The surface color and state of the three fatty acid salt coatings were different，but the micromorphology was all ＂cauliflower＂ cluster，and there was an obvious micro nano hierarchical structure.The wear resistance and heat resistance of the three superhydrophobic coatings were different due to different fatty acid salts.Corrosion resistance of three superhydrophobic coatings was better than that of the substrate.CSHS-Cu had the best corrosion resistance.The Jcorr of CSHS-Cu was 1/5 of that of the bare substrate，and its Rct was 25 times that of the bare substrate.

Key words： fatty acid salt; superhydrophobic coating; wear resistance; heat resistance; corrosion resistance; TC4 alloy

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YANG Sijie, YANG Xin, LUO Song, YANG Lansong . Preparation and Properties of Fatty Acid Salt Superhydrophobic Coatings[J]. Materials Protection, 2023 , 56(4) : 116 -123 . DOI: 10.16577/j.issn.1001-1560.2023.0092

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