Preparation of a 2024Al-Based Super-Hydrophobic Surface

Abstract

A super-hydrophobic 2024Al surface with micro- and nano-scale hierarchical crater-like structure has been prepared by constructing the surface and modifying the textured surface with low energy material of HFTHTMS (HFTHTMS = (heptadecafluoro-1,1,2,2-tetrahydrodecyl)trime thoxysilane). The textured surface was characterized by scan electron microscope (SEM) and x-ray photoelectron spectrum (XPS). The SEM image shows the crater-like surface with micro- and nano-scale hierarchical microstructures. The textured surface modified with HFTHTMS has super-hydrophobicity with a contact angle of 162° and the sliding angle of 3°.

Keywords:

• Super-hydrophobic surfaces
• surface texture
• Wettability

Acknowledgments

This work was supported by the National Natured Science Foundation of China (Grant No. 50705094), the Innovative Group Foundation (Grant No. 50521502) and the National 973 Project (No.2007 CB607601).