Fiber-Reinforced Heat-Resistant Sound-Absorbing Material and Process for Producing the Same
Patent #: 7,829,479
Inventor(s): Tosutomu Oishi, Yoshizumi Tanaka, Norifumi Miyamoto, Michiyuki Suzuki and Mitsuhiko Sato
Company: Ishikawajima-Harima Heavy Industries Co., Ltd.
Researchers have patented a production process that comprises a preform formation step of forming a fiber preform made of silicon carbide short fibers having heat resistance of 1000ÁC or greater; a sol-gel preparation step of preparing a sol-gel solution containing a heat resistant compound having heat resistance of 1000ÁC or greater; an impregnation-drying-calcination step of impregnating the fiber preform with the sol-gel solution, followed by drying and calcining; and a crystallization step of crystallizing the fiber preform after impregnation, drying and calcination.
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