Fabrication of Ta-Hf-C-based Ultra High Temperature Composites via a
Agency / Branch:
DOD / MDA
This Phase I STTR program seeks a new fabrication method to produce stronger (>100 kpsi) and tougher (>10 MPa m1/2) ultra high temperature Ta-Hf-C-based composites (UHTC) with an outstanding oxidation resistance for use as thermal protection systems for hypersonic applications, as well as for advanced rocket nozzle throat components. UES will apply a novel "Top Down" approach to control the microstructures of the composites. This approach will produce a very unique grain structure that can offer high strength, high fracture toughness, and high oxidation resistance. Hot-pressing will be used as a means for densification during the Phase I feasibility study. In the Phase II work, a sinter/HIP process will be explored for near-net shape fabrication. During the Phase I program, UES will collaborate with the University of Alabama to evaluate oxidation mechanisms and to conduct microstructural characterization. UES will process the powders and will also evaluate the mechanical properties.
Small Business Information at Submission:
Bryce W. Skinn
Business Relations Manager
Research Institution Information:
4401 Dayton-Xenia Road Dayton, OH 45432
Number of Employees:
University of Aabama
Dept. of Met. & Mat. Eng.
Tuscaloosa, AL 35487
Gregory B. Thompson