Method of applying a metallic heat rejection coating onto a gas turbine engine component

US6720034B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Andrew Jay Skoog · Sharonville, US
• Jane Ann Murphy · Franklin, US
• John Frederick Ackerman · Laona, US
• Paul Arszman · Cincinnati, US
• Bryan Thomas Bojanowski · Cincinnati, US
• Timothy Lattire · Sunman, US

Key dates

• Filing date: Apr 23, 2002
• Grant date: Apr 13, 2004
• Expiry date: Apr 23, 2022

Classification

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

Abstract

A heat-rejection coating is applied to a metallic component of a gas turbine engine, preferably made of a nickel-base superalloy. A component surface is preferably pre-treated, as by polishing the component surface, thereafter pre-oxidizing the component surface, and thereafter applying a ceramic barrier coating onto the component surface. A reflective-coating mixture is air sprayed onto the pre-treated component surface. The reflective-coating mixture includes a metallic pigment, such as platinum, gold, palladium, and alloys thereof, and a reflective-coating-mixture carrier. The component with the reflective-coating mixture sprayed thereon is fired.