CRCU

Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (2): 155-158.doi: 10.1007/s40242-016-5326-0

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Fabrication of Superhydrophobic Surface with Different Metal Films on Aluminum Alloy

WANG Yang, LIU Xiaowei, ZHANG Haifeng, ZHOU Zhiping   

  1. Department of Microelectronics, Harbin Institute of Technology, Harbin 150001, P. R. China
  • Received:2015-08-12 Revised:2015-12-29 Online:2016-04-01 Published:2016-01-11
  • Contact: ZHANG Haifeng E-mail:zhanghf@hit.edu.cn
  • Supported by:

    Supported by the National Basic Research Program of China(No.2012CB934104), the National Natural Science Foundation of China(Nos.61071037, 61474034) and the Fundamental Research Funds for the Central Universities of China(No. HIT.NSRIF.2014040).

Abstract:

A simple technique was developed for the fabrication of a superhydrophobic surface on the aluminum alloy sheets. Different hierarchical structures(Ag, Co, Ni and Zn) were formed on the aluminum surface by the galvanic replacement reactions. After the chemical modification of them with fluorination, the wettability of the surfaces was changed from superhydrophilicity to superhydrophobicity. Scanning electron microscopy(SEM), energy dispersive spectrometry(EDS) and water contact angle measurement were performed to characterize the morphological characteristic, chemical composition and superhydrophobicity of the surfaces. The as-prepared superhydrophobic surfaces showed a water contact angle as high as ca.160° and sliding angle as low as ca.3°. We hope the method to produce superhydrophobic surface can be used in many fields.

Key words: Superhydrophobicity, Water contact angle, Aluminum alloy, Micro-nano structure