Environmental barrier coatings

US12421175B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Glen Harold Kirby · Kyles, US
• Nathaniel Patrick Brown · Cincinnati, US
• Guruvenket Srinivasan · Loveland, US
• Reza Sarrafi-Nour · Clifton Park, US
• Nicholas Edward Antolino · Schenectady, US
• Julin Wan · Rexford, US
• Anant Achyut Setlur · Niskayuna, US
• Taryn Elizabeth Hewitt · Cincinnati, US

Key dates

• Filing date: Jan 26, 2022
• Grant date: Sep 23, 2025
• Expiry date: Nov 30, 2043

Classification

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

Abstract

Environmental barrier coatings including a bondcoat layer including silicon and a rare earth silicate-based hermetic layer and rare earth silicate-based non-hermetic layer are provided. The rare earth silicate-based hermetic layer is deposited on the bondcoat via a thermal spray process and has an elastic modulus ranging from 100 GPa to 180 GPa. The at least one rare earth silicate-based non-hermetic layer is deposited on the rare earth silicate-based hermetic layer and has an elastic modulus ranging from 50 GPa to 100 GPa. Coated gas turbine engine components and methods for coating gas turbine engine components are also provided.