Method of preparing wetting-resistant surfaces and articles incorporating the same

US7914856B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Tao Deng · New York, US
• Dennis Michael Gray · Delanson, US
• Todd Charles Curtis · Schenectady, US
• Yuk-Chiu Lau · Ballston Lake, US
• Dalong Zhong · Shanghai, CN
• Ming Feng Hsu · Niskayuna, US
• Nitin Bhate · Rexford, US
• Kripa K. Varanasi · Lexington, US
• Pazhayannur Ramanathan Subramanian · Niskayuna, US
• Margaret Louise Blohm · Niskayuna, US

Key dates

• Filing date: Jun 29, 2007
• Grant date: Mar 29, 2011
• Expiry date: Sep 23, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present invention provides methods for manufacturing an article having a wetting-resistant surface. The method includes providing a mixture comprising a plurality of micron-sized first particles and a plurality of nano-sized second particles, and a binder; depositing the mixture onto a substrate to form a wetting-resistant surface via a thermal spray process. The mixture is deposited without substantial melting of the first and second particles. The wetting-resistant surface has wettability sufficient to generate, with a reference fluid, a static contact angle of greater than about 90 degrees.