The Electrochemistry Corrosion Behavior of Fe₃Al-Type Intermetallic with Super-Hydrophobic Surfaces

Tao Liu Institute of Materials Science and Engineering, Shanghai Maritime University, Shanghai, China

Kin-Tak Lau Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, ChinaCorrespondence[email protected]

Shougang Chen Institute of Materials Science and Engineering, Shanghai Maritime University, Shanghai, China

Sha Cheng Institute of Materials Science and Engineering, Shanghai Maritime University, Shanghai, China

Tian He College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China

Yansheng Yin Institute of Materials Science and Engineering, Shanghai Maritime University, Shanghai, China

Abstract

A novel super-hydrophobic film was prepared by myristic acid (CH₃(CH₂)₁₂COOH) chemically adsorbed onto the polyethyleneimine (PEI) coated Fe₃Al-type intermetallic wafer. The film character and structure were probed with contact angle measurement, scanning electron microscopy (SEM), and atomic force microscope (AFM). The results suggest that the structure of the film is similar to lotus, and the seawater contact angle is larger than 150°. Moreover, the corrosion resistances of untreated and modified samples in seawater were investigated by electrochemical impedance spectroscopy (EIS). Experimental results show that the corrosion rate of Fe₃Al-type intermetallic with super-hydrophobic surface decreases dramatically because of its special microstructure.

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The Electrochemistry Corrosion Behavior of Fe₃Al-Type Intermetallic with Super-Hydrophobic Surfaces