Accession Number : ADA289551

Title :   Ceramic Composite Combustor Cans for Expendable Turbine Engines.

Descriptive Note : Final rept. 29 Apr 93-15 Feb 94,

Corporate Author : CERAMIC COMPOSITES INC MILLERSVILLE MD

Personal Author(s) : Fehrenbacher, Larry L. ; Hanigofsky, John A.

PDF Url : ADA289551

Report Date : MAR 1994

Pagination or Media Count : 35

Abstract : Ceramic matrix composite fabrication by microwave assisted chemical vapor infiltration (MWCVI) has been demonstrated as a feasible, faster, and more economical technique as compared to conventional CVI. Two deposition systems, carbon and silicon carbide, were investigated using this processing technique. Densification rates over an order of magnitude higher have been achieved on small cylindrical Nicalon fiber preforms. Economic forecasts based on previous SiC depositionandthis Phase I work shows a significant improvement in part cost as compared to conventional CVI work. A reduction in cost of a factor of 20 has been calculated. A larger, commercial microwave system has been designed for scaled up prototype part fabrication.

Descriptors :   *CERAMIC MATRIX COMPOSITES, *CERAMIC MATERIALS, *GAS TURBINES, *CERAMIC FIBERS, FIBER REINFORCED COMPOSITES, FABRICATION, CHEMICAL VAPOR DEPOSITION, MICROWAVES, CARBON, COMBUSTORS, INFILTRATION(FLUIDS), TEMPERATURE GRADIENTS, COOLING AND VENTILATING EQUIPMENT, SILICON CARBIDES.

Subject Categories : Ceramics, Refractories and Glass
      Laminates and Composite Materials
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE