Low coefficient of thermal expansion materials including nonstoichiometric cordierite fibers and methods of manufacture

US7938876B2 · kind B2 · utility

Assignee

• GE02 Technologies, Inc. · US

Inventors

• James Jenq Liu · Mason, US
• William M. Carty · Alfred Station, US
• Bilal Zuberi · Cambridge, US
• Sunilkumar C. Pillai · North Billerica, US

Key dates

• Filing date: Apr 17, 2008
• Grant date: May 10, 2011
• Expiry date: Mar 14, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S264/48
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A fibrous ceramic material comprises a plurality of fibers having a RxMg2Al4+xSi5−xO18 or RxMg2−xAl4Si5O18 compositional structure. The fibrous ceramic material is form by combining two or more RxMg2Al4+xSi5−xO18 or RxMg2−xAl4Si5O18 precursors in which at least one of the two or more RxMg2Al4+xSi5−xO18 or RxMg2−xAl4Si5O18 precursors is in fiber form. The fibrous ceramic material is shaped to form a fibrous body in which at least about 20% of all fibers therein are aligned in a substantially common direction.