Ceramic material having ceramic matrix composite backing and method of manufacturing

US7291407B2 · kind B2 · utility

Assignee

• Siemens Power Generation, Inc. · US

Inventors

• Gary B. Merrill · Orlando, US
• Michael A. Burke · Pittsburgh, US
• Stefan Hoffmann · Mülheim an der Ruhr, DE
• Jay A. Morrison · Oviedo, US
• Marc Tertilt · Hattingen, DE
• Daniel Hofmann · Paderborn, DE
• Daniel Thompson · Pittsburgh, US

Key dates

• Filing date: Sep 4, 2003
• Grant date: Nov 6, 2007
• Expiry date: Mar 15, 2025

Classification

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

Abstract

An article comprising a ceramic material having a ceramic matrix composite backing adapted for use in a gas turbine engine is provided. The article comprises a structural ceramic material having a hot side facing toward a high temperature environment and a cold side facing away from the high temperature environment; and a ceramic matrix composite composition having a strength greater than the strength of the ceramic material attached to the back of the cold side of the ceramic material, whereby crack initiation and propagation are inhibited by the ceramic matrix composition to a greater degree than by the ceramic material.