Journal
SURFACE & COATINGS TECHNOLOGY
Volume 450, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2022.129008
Keywords
Electrodeposited Ni coating; WS2 granules; P110 steel; Superhydrophobic surface; Corrosion resistance
Funding
- National Natural Science Foundation of China
- Graduate Student Innovation Fund
- Southwest Petroleum University
- [51774245]
- [2021CXZD12]
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A novel superhydrophobic composite coating was prepared using a two-step method. The deposition coating, made of Ni and WS2, exhibited high roughness and suitable micro-nano morphology. After modification with HDTMS, the coating showed superhydrophobic properties with low adhesion to aqueous solutions. The composite coating conformed to the Cassie-Baxter model and exhibited excellent corrosion resistance.
In this study, a novel superhydrophobic composite coating is prepared by a two-step method. Firstly, the Nibased deposition coating is fabricated via composite electrodeposition with WS2 granules worked as dispersed phase particles, and the roughness of deposit coating can be adjusted by changing the added amount of sulfide in the bath. The prepared Ni-WS2 deposit exhibits sufficiently high roughness and suitable micro-nano morphology. Then, hexadecyltrimethoxysilane (HDTMS) is used to modify the deposition coating with low surface energy to obtain silanol-modified Ni-WS2 coating with superhydrophobic properties. The superhydrophobic behavior of the composite coating conforms to the Cassie-Baxter model, with low adhesion to aqueous solutions. When the addition amount of WS2 particles in the plating solution during the electrodeposition process is 5 g.L-1, the prepared composite coating has the excellent superhydrophobic properties. The water contact angle of the composite coating is 154.7 degrees +/- 2 and the sliding angle can reach 6 degrees. And the superhydrophobic composite coating exhibits excellent corrosion resistance.
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