Plasma sprayed mullite coatings on silicon-base ceramics

US5496644A · kind A · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Kang N. Lee · Zionsville, US
• Robert A. Miller · Brecksville, US
• Nathan S. Jacobson · Westlake, US

Key dates

• Filing date: Dec 20, 1993
• Grant date: Mar 5, 1996
• Expiry date: Dec 20, 2013

Classification

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

Abstract

A silicon-base ceramic substrate is provided with a mullite chemical barrier/thermal barrier coating uniformly bonded to a surface. The coating is substantially free of amorphous mullite.