Vapor deposition of ceramic materials

US5418003A · kind A · utility

Assignee

• General Electric Company · US

Inventors

• Robert William Bruce · Loveland, US
• David W. Skelly · Burnt Hills, US
• William Paul Minnear · Clifton Park, US
• Richard Arthur Nardi, Jr. · Scotia, US
• David J. Wortman · Niskayuna, US
• Antonio F. Maricocchi · Loveland, US
• Rudolfo Viguie · Cincinnati, US
• David V. Rigney · Cincinnati, US

Key dates

• Filing date: Sep 10, 1993
• Grant date: May 23, 1995
• Expiry date: Sep 10, 2013

Classification

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

Abstract

Evaporated ceramic coatings are prepared by furnishing an ingot of a ceramic material, treating the ingot to reduce sources of gas within the ingot, and evaporating the ceramic material in the ingot by melting the surface of the ingot with an intense heat source. The evaporated ceramic is deposited upon a substrate as the ceramic coating. The reduced gas content of the ingot decreases the incidence of spitting and eruptions from the molten surface of the ingot, thereby improving the quality of the deposited coating, and facilitating increases in evaporation rates and coatings process production rates.