Low-microcracked, porous ceramic honeycombs and methods of manufacturing same

US7618699B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Douglas Munroe Beall · Corning, US
• Isabelle Marie Melscoet-Chauvel · Corning, US
• Gregory Albert Merkel · Corning, US
• Tinghong Tao · Big Flats, US
• David J. Thompson · Oak Grove, US

Key dates

• Filing date: Jun 28, 2007
• Grant date: Nov 17, 2009
• Expiry date: Jun 28, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249953
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Substantially non-microcracked, porous, cordierite ceramic honeycomb bodies are provided. Although exhibiting moderately high thermal expansion (CTE) between 7×10−7 to 16×10−7/° C. (25-800° C.), the honeycomb bodies exhibit relatively high thermal shock parameter (TSP), such as TSR≧525° C. by virtue of a high MOR/E ratio, and/or low Eratio=ERT/E1000° C. and well interconnected porosity, as witnessed by a relatively high pore connectivity factor (PCF). A method of manufacturing the honeycomb ceramic structure is also provided.