4.6 Article

Robust Self-Cleaning and Marine Anticorrosion Super-Hydrophobic Co-Ni/CeO2Composite Coatings

期刊

ADVANCED ENGINEERING MATERIALS
卷 22, 期 11, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.202000402

关键词

cerium oxide particles; electrodeposition; marine corrosion; self-cleaning; wear resistances; wettability

资金

  1. Fundamental Research Funds for the Central Universities China [FRF-TP-18-009A1]
  2. Tribology Science Fund of State Key Laboratory of Tribology

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Until now, superhydrophobic materials that are scale-up fabrication and application to harsh environments remain challenging because of their fragile mechanical durability. Because of their unique electronic structure, rare-earth oxides (REOs) have been proven to be intrinsically hydrophobic. Herein, cerium oxide particles (CeO2) are added to the coating by coelectrodeposition. The Co-Ni/CeO(2)composite coating from the electrolyte containing 3.44 g L(-1)possesses a flower-like hierarchical structure, displaying a superhydrophobic behavior after the modification by 1H,1H,2H,2H-perfluorooctyltrichlorosilane (PFTEOS). More importantly, excellent mechanical durability with critical abrasion distance of 22.5 m is achieved under a 5 kPa fixed normal pressure in the liner abrasion test before the loss of superhydrophobicity. Also, electrochemical measurements demonstrate that the superhydrophobic composite coatings display high corrosion resistance.

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