The development of a combustion chamber liner utilizing a long-fibre reinforced composite material made using the poly-silazane impregnation method and the chemical vapor deposition method

摘要

A combustion liner made of a fiber-reinforced ceramic matrix composite (CMC) having oxidation-resistance and the required drawing dimensions, has been developed by using both methods of poly-silazane impregnation and SiC coating, which is expected to be effective in the improvement of oxidation resistance, through Chemical Vapor Deposition (CVD).A basic manufacturing technology has been established to make static components with complex shapes using non-woven fabrics made of short cut continuous fiber.The prototype extension liner has proven to be available in practical combustion environment atmosphere in engines through satisfactory inspection results conducted after the engine combustion environment test for a cumulative test duration of 31 hours.