Self-Cleaning and Superhydrophobic Surfaces Based on TIO2 Nanotubes
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United States of America Patent
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Oct 22, 2015
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Dec 11, 2012
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Dec 22, 2011
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Abstract
A method for producing a superhydrophobic coating with self-cleaning properties on a metallic substrate involves providing a metallic substrate that titanium and an electrolyte solution that includes a fluoride salt. At least part of a surface of the metallic substrate is contacted with the electrolyte solution. The metallic substrate is anodized in order to produce a nanoporous layer having nanotubes including titanium dioxide on the metallic substrate. A superhydrophobising coating is applied onto the nanoporous layer comprising nanotubes including titanium dioxide, wherein the electrolyte solution includes a further water-soluble salt selected from the group comprising ammonium sulphate, sodium sulphate, sodium bisulphate, potassium sulphate, potassium bisulphate and mixtures thereof.
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