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Chemical Vapor Deposited Silicon Carbide Turbine Rotors
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English
Abstract
In a ceramic gas turbine, the rotor is the component with the most demanding requirements, and its performance limits will determine the turbine operating conditions. Chemical vapor deposited (CVD) silicon carbide (SiC) has been shown to be one of the most promising materials considering strength, creep, oxidation, fabricability, and cost. The CVD process has produced rotors in the desired configuration and test samples with strengths of 100 ksi at 1400°C and peak values of 200 ksi at 1500°C. CVD SiC is a pure material with very low creep rates showing potential for operation to 10,000 h and possibly beyond at 1600°C and 30 ksi compared to 1000 h at 1200°C and 10 ksi for the best silicon nitride (Si3N4) available. Under equal heat flux conditions, the thermal stress generated in CVD SiC is similar to Si3N4, and CVD SiC has superior oxidation resistance to other materials tested.
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Authors
Citation
Engdahl, R., "Chemical Vapor Deposited Silicon Carbide Turbine Rotors," SAE Technical Paper 740184, 1974, https://doi.org/10.4271/740184.Also In
References
- Stetson A. R. “Potential Materials for Gas Turbines Operating at 2200°F Blade Temperature.” SAE Transactions 78 1969 paper 690663
- McLean Arthur F. Fisher Eugene A. Bratton Raymond J. “Brittle Materials Design, High Temperature Gas Turbine.” Technical Report to Army Materials and Mechanics Research Center March 1973
- McLean Arthur F. Fisher Eugene A. Harrison Don E. “Brittle Materials Design, High Temperature Gas Turbine.” Technical Report to Army Materials and Mechanics Research Center March 1972
- Weiss J. R. Diefendorf R. J. “Relationship of Structure to Properties in Chemically Vapor Deposited Silicon Carbide.” Chemical Vapor Deposition Fourth International Conference Boston 1973
- McCandless L. C. Withers J. C. “Chemically Vapor Deposited Ceramic Coatings of Carbides and Oxides.” Chemical Vapor Deposition Second International Conference Los Angeles 1970
- McLean Arthur F. Fisher Eugene A. Bratton Raymond J. “Brittle Materials Design, High Temperature Gas Turbine.” Technical Report to Army Materials and Mechanics Research Center September 1972
- Prochazka Svante “Investigation of Ceramics for High-Temperature Turbine Vanes.” Final Report to Department of the Navy December 1972
- Cassano Anthony J. Bedell John R. “Thermionic Topping Converter for a Coal-Fired Power Plant.” Final Report to Office of Coal Research
- Private communication with R. J. Diefendorf Rensselaer Polytechnic Institute Troy, N.Y.
- Lynch J. R. Ruderer C. G. Duckworth W. H. “Engineering Properties of Selected Ceramic Materials.” Columbus, Ohio American Ceramic Society, Inc. 1966
- Private communication with Robert Beck Teledyne CAE Toledo