Fused silica body with vitreous silica inner layer, and method for making same

US9193620B2 · kind B2 · utility

Assignee

• Raytheon Company · US

Inventors

• Derrick J. Rockosi · Lynn, US
• Richard Gentilman · Acton, US
• Christopher K. Solecki · McKinney, US
• Allen L. Kelly · Las Cruces, US
• William C. Strauss · Flower Mound, US
• Brian Gahan · McKinney, US

Key dates

• Filing date: Mar 31, 2011
• Grant date: Nov 24, 2015
• Expiry date: Mar 31, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/26
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A fused silica body comprising a layer of vitreous silica adjacent at least a portion of an inner surface is described in embodiments herein. In other embodiments, a method of making a fused silica body with a layer of vitreous silica adjacent at least a portion of an inner surface is described herein, comprising heating at least a portion of the inner surface to the point of vitrification. In certain embodiments, the method involves passing a linear local heat source over the inner surface in a particular manner, such as a helical fashion transverse to the linear shape, and may involve creating on the inner surface of the body overlapping swaths of temporarily melted silica material.