Reaction-bonded Si3N4 and SiC matrix compositesA development status evaluation is presented for the reaction-bonded SiC- and Si3N4-matrix types of fiber-reinforced ceramic-matrix composite (FRCMC). A variety of reaction-bonding methods are being pursued for FRCMC fabrication: CVI, CVD, directed metal oxidation, and self-propagating high-temperature synthesis. Due to their high specific modulus and strength, toughness, and fabricability, reaction-bonded FRCMC are important candidate materials for such heat-engine components as combustor liners, nozzles, and turbine and stator blading. The improvement of long-term oxidative stability in these composites is a major goal of current research.
Document ID
19920057234
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Bhatt, Ramakrishna T. (U.S. Army, Propulsion Directorate, Cleveland OH, United States)
Behrendt, Donald R. (NASA Lewis Research Center Cleveland, OH, United States)