Silica-forming articles having engineered surfaces to enhance resistance to creep sliding under high-temperature loading

US9561986B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

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

Key dates

• Filing date: Oct 31, 2013
• Grant date: Feb 7, 2017
• Expiry date: Dec 4, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24537
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An article includes a silicon-containing region; at least one outer layer overlying a surface of the silicon-containing region; and a constituent layer 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 being formed by constituents of the silicon-containing region and being susceptible to creep within an operating environment of the article, wherein the silicon-containing region defines a plurality of channels and a plurality of ridges that interlock within the plurality of channels are formed in the silicon-containing region to physically interlock the at least one outer layer with the silicon-containing region through the constituent layer.