Environmental barrier coatings and methods therefor

US9428650B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Peter Joel Meschter · Niskayuna, US
• Curtis Alan Johnson · Schenectady, US
• Sairam Sundaram · Guilderland, US
• Julin Wan · Rexford, US
• Don Mark Lipkin · Niskayuna, US

Key dates

• Filing date: Dec 11, 2012
• Grant date: Aug 30, 2016
• Expiry date: Mar 21, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24612
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An article includes a silicon-containing region including surface features on a surface thereof. The surface features include depressions, protuberances, or combinations thereof. At least one outer layer overlies the surface of the silicon-containing region. A constituent layer is provided on the surface of the silicon-containing region and between and contacting the silicon-containing region and the at least one outer layer. The constituent layer is formed by constituents of the silicon-containing region and is susceptible to creep within an operating environment of the article. The surface features physically interlock the at least one outer layer with the silicon-containing region through the constituent layer.