Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (10): 1631-1636.doi: 10.3866/PKU.WHXB20071027

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Preparation of Superhydrophobic Coating on Aluminum Alloy with Its Anti-Corrosion Property

LI Song-Mei; WANG Yong-Gan; LIU Jian-Hua; WEI Wei   

  1. College of Material Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, P. R. China
  • Received:2007-03-07 Revised:2007-07-02 Published:2007-10-01
  • Contact: LI Song-Mei

Abstract: Based on the cooperation of the fluorated polyurethane and nano silicon oxide, superhydrophobic coating had been successfully fabricated on the surface of aluminium alloy. The superhydrophobic coating was characterized and investigated by FT-IR、SEM and electrochemical measurement. The FT-IR result showed that silane coupling reagent (A1100) had been grafted on the surface of the nano-silicon oxide. Scanning electronic microscopy(SEM) and optical contact angle meter (OWA) indicated that rough structure was present on the surface of the coating, and the contact angle could reach up to 156°with sliding angle smaller than 5°. The results of electrochemical measurements (EIS and polarization curve) showed that anti-corrosion property of aluminiumalloy had been greatly improved.

Key words: Superhydrophobic, Silane coupling reagent, Electrochemical measurement, Anti-corrosion property


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