| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to ceramic composite materials and can be used in making heat-loaded assemblies and components of prospective gas-turbine units and engines of gas and oil pumping, transportation and energy systems operating at high thermal cyclic loads at temperatures of up to 1650C in air and in fuel combustion products. The disclosed ceramic composite material contains carbon fibre and a matrix obtained from a composition having the following chemical composition, wt %: Si 20-35, C 25-40, SiO2 5.5-6.0, HfO2 5-8, SiC - the rest. ^ EFFECT: high reliability and longer service life of articles under high thermal cyclic loads at operating temperature of up to 1650C. ^ 3 tbl |
