Low-cost Innovative Erosion-resistant Environment-durable Ceramic Matrix Materials for Advanced SiC/SiC(N, Me) CMC Navy SBIR FY2009.1 Sol No.: Navy SBIR FY2009.1 Topic No.: N091-011 Topic Title: Low-cost Innovative Erosion-resistant Environment-durable Ceramic Matrix Materials for Advanced SiC/SiC(N, Me) CMC Proposal No.: N091-011-0066 Firm: Edward Pope Dr dba MATECH 31304 Via Colinas, Suite 102 Westlake Village, California 91362-3901 Contact: HeeMann Yun Phone: (818) 991-8500 Web Site: www.matechgsm.com Abstract: MATECH GSM (MG) proposes demonstrating a low-cost and enhanced-environment- and erosion-resistant CMC material system, ASGMAC (SiC/SiC(N,Me)), by optimizing MG's low-cycle PIP matrix densification method and by adopting modified (and/or functionally graded) polymer pre-cursor derived matrices for higher erosion and corrosion resistance at elevated temperatures up to ~2700F. The modified and functionally graded matrices are to be functioned for mitigating the current issues of the EBC onto the Si-based CMC substrates, such as poor impact resistance and unstable microstructures of the CMC surface over-coating. MG has successfully demonstrated 5-cycle PIP densifications of 2D / 3D architecture CMC panels using a pre-ceramic Si-based polymer and also has successfully synthesized a variety of Zr- (or Hf-) based ultra-high temperature pre-ceramic polymers for UHT ceramic fibers and matrices. The CMC community is well aware of several issues having to do with the Si-based material systems; one of those is a necessity for significant improvement in moisture and salt-fog corrosion resistance. MG's objectives are: 1) Tailor the matrix composition rather than using Si-based but other refractory-based ceramic matrix formation, 2) Add second refractory or rare-earth oxide forming element in the current Si-based SiC or SiNC polymer that enhances moisture / salt-fog environmental resistance. Benefits: MG's innovative, PIP-derived, and functionally gradient matrix Si-based CMC will 1) mitigate a catastrophic failure without the use of surface coatings, 2) increase mission life-time due to increased durability, 3) reduce the vehicle dry weight by utilizing the smaller and thinner size of any structural components, and 4) reduce the fabrication cost by eliminating extra coatings. A wide rage of aero-, space-, and missile-defense applications that require low-cost material possessing, high temperature oxidation stability, high temperature moisture resistance, high strength, and low mass. These applications include many propulsion and power generating components such as hot gas generators, hot gas valves and components, and heat exchangers. Return