Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (11): 2210.

• Articles • Previous Articles     Next Articles

Fast Fabrication of Superhydrophobic Surfaces on Aluminum by the Comibined Method of Chemical and Electrochemical Corrosion

ZHANG Qin*, ZHU Yuan-Rong, HUANG Zhi-Yong   

  1. College of Bioengineering, Jimei University, Xiamen 361021, China
  • Received:2009-04-03 Online:2009-11-10 Published:2009-11-10
  • Contact: ZHANG Qin. E-mail: qinzhang@jmu.edu.cn
  • Supported by:

    福建省科技重点项目(批准号: 2007Y0028)、福建省自然科学基金计划项目(批准号: D0740013)和集美大学科研基金(批准号: ZQ2007001) 资助.

Abstract:

This paper presents a quick method for creating hierarchical micro/nano-structure on aluminum to achieve water-repellent surface. The method includes two steps i.e. chemical etching and electrochemical corrosion. SEM results show that the micro-structure can be easily obtained by means of chemical etching and nano-structure can be attained using electrochemical corrosion. And the micro/nano-sructure surface can be fabricated within 20 min by the two-step method. Compared to one-step electrochemical oxidization, this me-thod make the processing-time 1—2 order shorter and current density 1 order smaller. Meantime, it is una-ffected by the aluminum crystalline with respect to chemical etching. The two-step method is hopeful to be used in industry and expected to other metals for preparing super-hydrophobic surfaces.

Key words: Super-hydrophobic surface; Aluminum; Chemical corrosion; Electrochemical corrosion

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