UBE Tyrannohex® Heat Resistant Composite

Description: Tyrannohex is a fiber assembled ceramic with both toughness like a shell or wood and excellent heat-resistance in air.Very high volume fraction (Vf) of the thin (~ 10m), continuous fiber.Vf= > 90 vol%. Tyrannohex is produced by the use of only Tyranno fiber without other matrix materials using a high-pressure machine.Very high fracture energy.Tyrannohex shows a very high fracture energy (~ 9000J/m^2) which is about 100 times as large as Si3N4 sintered body.Excellent oxidation resistance up to 1500°C in air.Almost initial strength could be maintained up to 1500°C in air. And, the initial strength was also maintained after heat-treatment at 1500°C for 1000 hours in air. (Effective formation of a protective oxide layer on the surface during early heat-treatment.)Very good creep-resistance in air compared with usual SiC/SiC composites.Difficulty of a crack formationSelf-healing eject around the interphaseDensified structureInformation provided by UBE.