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Fabrication of Ceramic Components for Advanced Gas Turbine Engines
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Abstract
High quality, reliable ceramic components are required in the Garrett/Ford AGT101 program. The purpose of this program is to demonstrate the feasibility of achieving high efficiency in a ceramic gas turbine engine. AiResearch Casting Company (ACC) has supplied most of the ceramic components qualified for testing in the AGT101 program. These components include turbine rotor, stator, shroud, inner/outer diffuser and seal ring. Except the stator, the fabrication process used is slip casting of silicon or silicon nitride powders to produce reaction bonded or sintered components.
The recent high yields (> 80%) in fabrication of the above slip cast components at ACC were primarily accomplished by a better understanding of the effects of processing parameters on the microstructure and properties of the finished parts. The parameters studied include powder particle size distribution, casting slip viscosity, pH and solid content. Examples illustrating the relationships between processing parameters and the microstructure and properties of the finished parts are presented. The green components were consolidated by nitriding, sintering or sinter/HIP. The results of the recent sinter/HIP developments are discussed.
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Citation
Liu, F. and Solidum, E., "Fabrication of Ceramic Components for Advanced Gas Turbine Engines," SAE Technical Paper 851786, 1985, https://doi.org/10.4271/851786.Also In
References
- AGT 2nd Semiannual Progress Report July 1980 Dec. 1980 69
- Lindberg L.J. Benn K.W. 3500 Hr. Durability Testing of Commercial Ceramic Materials Interim Report Dec. 1984 42
- Rorabaugh M. Styhr K. Slip Casting Silicon Nitride Components: Reliability Ceramics for High-Performance Application III, Reliability Burke J.J. Lenoe E.M. Katz R.N. Plenum Press N.Y. 1983 309 322
- Ezis A. The Fabrication and Properties of a Slip Casting Silicon Nitride Ceramics for High Performance Application Burke J.J. Gorum A.E. Katz R.N. Chestnut Hill, Mass. 1975 207 222
- Sacks M.D. Dispersion of Silicon Powder Non-published paper Oct. 1983
- Jones B.F. Lindley M.W. Strength, Density, Nitrogen Weight Gain Relationships for Reaction Bonded Silicon Nitride J. Mater. Sci. 10 967 972 1975
- Jones B.F. Lindley M.W. Additional Observations on the Strength/Nitrided Density Relationship for Reaction Bonded Silicon Nitride J. Mater. Scl. 11 191 193 1976
- Elias D.P. Lindley M.W. Reaction Bonded Silicon Nitride Part 1: The Influence of Oxygen and Water Vapour Contamination on Strength and Composition J. Mater. Sci. 11 1278 1287 1976
- Jones B.F. Lindley M.W. Reaction Bonded Silicon Nitride Part 2: The Influence of Nitrogen Gas Flow on Strength and Strength/Density Relationships J. Mater. Sci. 11 1288 1295 1976
- Jones B.F. Lindley M.W. The Influence of Hydrogen in the Nitriding Gas on the Strength of Reaction Bonded Silicon Nitride J. Mater. Sci. 11 1969 1971 1976
- Jones, J.T. Berard, M.F. “Ceramics: Industrial Processing and Testing.” Ames, Iowa The Iowa State University Press 1972
- Terwilliger G.R. Lange F.F. “Development of Microstructure and Mechanical Properties During Hot-Pressing of Si 3 N 4 ” Ceramic Micro-structures Fulrath R.M. Pask J.A. Westview Press Boulder, CO. 1977 669 78