Process for making ceramic matrix composite parts with cooling channels

US6627019B2 · kind B2 · utility

Inventors

• David C. Jarmon · Kensington, US
• Xiaolan Hu · San Diego, US
• Steven W. Burd · Cheshire, US
• Christopher Jones · Suffield, US
• Stephen K. Kramer · Cromwell, US
• Christopher L. Kogstrom · North Palm Beach, US
• Nikolaos Napoli · Jensen Beach, US
• Bruce Bond · Rochester, US

Key dates

• Filing date: Dec 18, 2000
• Grant date: Sep 30, 2003
• Expiry date: Mar 9, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249986
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A ceramic matrix composite part having elongated cooling channels within the wall thereof is manufactured by inserting decomposable inserts within a woven ceramic fiber preform. The inserts are tows of continuous carbon fibers surrounded by a carbonaceous filler, and are inserted where the channels are desired. The preform, with the inserts in place, is disposed within a mold. A ceramic matrix material is added and the fiber preform is consolidated with the ceramic matrix material. The consolidated part is then heated to thermally decompose the inserts to create the elongated channels within the part. The inserts may be flexible and woven into the preform using an automated weaving loom, or they may have limited flexibility and be inserted by machine or by hand.