Development of oxidation and corrosion resistance hydrophobic graphene oxide-polymer composite coating on copper

SURFACE & COATINGS TECHNOLOGY

卷:232

Article

Singh, Bimal P.¹  Jena, Bikash Kumar¹  Bhattacharjee, Sarama¹  Besra, Laxmidhar¹ 

[1] CSIR, Inst Minerals & Mat Technol, Colloids & Mat Chem Dept, Bhubaneswar 751013, Orissa, India

关键词: Electrophoretic deposition;    Graphene oxide;    Silicone fluids;    Corrosion resistance;    Coatings;    EIS;   

DOI  :  10.1016/j.surfcoat.2013.06.004

来源: Elsevier

【 摘 要 】

Oxidation and corrosion resistant hydrophobic graphene oxide-polymer composite (GOPC) coating was fabricated on the copper by electrophoretic deposition (EPD). The GOPC coatings were characterized by scanning, and transmission electron microscope (SEM, TEM), thermogravimetric (TGA) and electrochemical impedance spectroscopy (EIS). At optimal EPD conditions of operating voltage 10 V and deposition time 30s, uniform crack free deposit with thickness 45 nm was achieved. Potentiodynamic polarization and EIS investigation demonstrated the efficacy of GOPC coating in shielding copper from corrosion under stringent environment condition. The electrochemical degradation of GOPC coating is more than three orders of magnitude lower than the bare copper substrate. This was due to the impermeability of GOPC coatings to ion diffusion of oxidizing gas and corrosive liquid solution. The procedure employed is fairly facile, inexpensive and less time consuming. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.

【 授权许可】

Free