Fabrication on Hydrophobicity of the Etched Aluminium Alloy Surfaces

Abstract:

Hydrophobic surfaces with contact angles greater than 90° and roll-off angles below 10° for water have been developed, based on low energy surfaces and rough texture on the micro-and nanometer scales. In this study, we fabricated a hydrophobic surface on a aluminum alloy substrate using the method of chemical etching without being modified by organic liquids such as surfactant-based solutions, alcohols, or alkanes. The measurement showed that the as-prepared surfaces possessed roughness on the micrometer scales by laser scanning confocal microscopy. The etched aluminum alloy surfaces had a maximum water contact angle of 120^o by using a water contact angle measurement. The forming course of the aluminum alloy etched surfaces with pores was analyzed. The wettability of the etched aluminum alloy surfaces is reinforced by means of controlling the surface rough texture on the micrometer scales.

• Periodical: Advanced Materials Research (Volume 924)
• Pages: 134-137
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.924.134
• Online since: April 2014
• Authors: Jing Li, Guo Hua Cao*, Xin Ming Zhang, Cheng Yu Xu, Qiang Li
• Keywords: Aluminium Alloy, Etching, Hydrophobic, Rough Texture

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