초록 ▼

A ceramic structure whose portion exposed to a heat cycle, as a high-temperature gas turbine blade, a turbo charger or the like, is coated with ceramics having a construction wherein a sinter mainly comprising a boride, nitride or carbide of the element of Group IIIa, IVa, Va or VIa of the Periodic

A ceramic structure whose portion exposed to a heat cycle, as a high-temperature gas turbine blade, a turbo charger or the like, is coated with ceramics having a construction wherein a sinter mainly comprising a boride, nitride or carbide of the element of Group IIIa, IVa, Va or VIa of the Periodic Table and retaining a high strength at a temperature of up to 1,100°C. is dispersed in sintered ceramics comprising at least one of silicon carbide, silicon nitride and sialon as its principal component. A ceramic structure having a thermal shock resistance, high versatility and reliability can be obtained.

대표청구항 ▼

A composite sintered ceramic structure having a high thermal shock resistance which comprises a first fine particle component consisting essentially of at least one member selected from the group consisting of Si3N4 and sialon and forming a matrix for the composite sintered ceramic structure and a s

A composite sintered ceramic structure having a high thermal shock resistance which comprises a first fine particle component consisting essentially of at least one member selected from the group consisting of Si3N4 and sialon and forming a matrix for the composite sintered ceramic structure and a second fine particle component consisting essentially of at least one member selected from the group consisting of YC, TiB2, HfB2VB2, VN, VC, NbB2, NbN, TaB2, CrB2, MoB2 and W2B and forming aggregates of particles which are more brittle than said first fine particle component and dispersed throughout the matrix whereby cracks developed in the composite sintered ceramic structure are incorporated into the aggregates and are bent or branched therethrough.