Materials Transactions Online

Materials Transactions, Vol.59 No.05 (2018) pp.793-798
© 2018 The Japan Institute of Metals and Materials

Preparation of Copper-Based Superhydrophobic Surfaces by Jet-Electrodeposition

Chen Jinsong1, 2, Guo Jian1, Qiu Mingbo2, Yang Jianming1, Huang Dazhi1, Wang Xiaoli1 and Ding Yunfei1

1Jiangsu Key Laboratory of Function Control Technology for Advanced Materials, Huaihai Institute of Technology, Lianyungang 222005, P. R. China
2Nanjing University of Aeronautics & Astronautics, Nanjing, Jiangsu Province 210016, P. R. China

The surface state of metallic materials significantly affect their physical, chemical, and corrosion behavior. In the present study, superhydrophobic coating with copper deposits fabricated using a jet-electrodeposition device on the pure copper substrates for reducing the corrosion rate of the copper substrates was studied. The effect of the micro-nano structured superhydrophobic coating on the improvement of corrosion resistance was investigated. Factors including the microstructures and wetting properties of coating were comprehensively analyzed using a scanning electron microscope, a Fourier transformed infrared and a surface contact angle meter. Results showed that the superhydrophobic coatings demonstrated a micro-nanostructure on the copper substrates. After modifying the copper deposits with stearic acid, a superhydrophobic surface was consequently obtained. The static contact angle (CA) and the sliding angle of the copper-based superhydrophobic surface were 151.6° and 5.7°, respectively. The samples covered with superhydrophobic coating exhibited relatively higher corrosion potential and lower corrosion current than the bared pure copper samples, indicating a notable enhancement of corrosion resistance characterized using polarization tests by an electrochemical workstation.

[doi:10.2320/matertrans.M2017361]

(Received 2017/11/24; Accepted 2018/02/16; Published 2018/04/25)

Keywords: jet-electrodeposition, superhydrophobic, contact angle, sliding angle, corrosion resistance

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