SBIR Phase I: One-Step Manufaturing Process for Low-Cost Silicon Carbide/Silicon Carbide Composites

这个小企业创新研究（SBIR）一期项目将研究一种低成本生产碳化硅/碳化硅（SiC-SiC）复合材料的工艺。这些复合材料具有优异的机械、热和腐蚀性能。其在航空航天和能源相关领域的应用受到制造成本高、缺乏氧化稳定界面和SiC纤维选择性抗蠕变性能差的极大阻碍。第一阶段将研究一种独特的方法，通过低成本碳-碳（C-C）复合材料的直接化学蒸汽反应（CVR）生产纯β - sic / β - sic复合材料。cvr衍生纤维有望表现出优异的抗蠕变性能，而原位生成的多孔SiC界面有望提供良好的纤维拉出性和良好的环境稳定性。降低SiC-SiC复合材料的成本不仅将扩大其在航空航天工业中的应用，而且还将为汽车、燃烧器、燃烧器、工艺设备、热回收设备和分离/过滤等民用工业提供机会。* * *

*** 96-61185 Kowbel This Small Business Innovative Research (SBIR) Phase I project will investigate a low cost process to produce silicon carbide/silicon carbide (SiC-SiC) composites. These composites exhibit excellent mechanical, thermal, and corrosion properties. Their applications in aerospace and energy-related areas are greatly hindered by high manufacturing costs, lack of oxidation stable interfaces, and selectively poor creep resistance of the SiC fibers. Phase I will study a unique way to produce pure beta-SiC/beta-SiC composites via a direct chemical vapor reaction (CVR) of low-cost carbon-carbon (C-C) composites. CVR-derived fibers are expected to exhibit excellent creep resistance, while an in-situ generated porous SiC interface is expected to provide good fiber pull-out and good environmental stability. Lowering the cost of SiC-SiC composites not only will expand applications in aerospace industries, but also provide opportunities in civilian industries such as automotive, burners, combusters, process equipment, heat recovery equipment, and separation/filtration. ***