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Robust Self‐Cleaning and Marine Anticorrosion Super‐Hydrophobic Co–Ni/CeO 2 Composite Coatings
Author(s) -
Xue Yanpeng,
Wang Shuqiang,
Xue Yanyan,
Cao Lili,
Nie Mengyan,
Jin Ying
Publication year - 2020
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.202000402
Subject(s) - materials science , abrasion (mechanical) , composite number , durability , corrosion , coating , composite material , superhydrophobic coating , cerium , fabrication , cerium oxide , electrolyte , oxide , sandpaper , nanotechnology , metallurgy , medicine , chemistry , alternative medicine , electrode , pathology
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 (CeO 2 ) 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.