Effects of polymer infiltration processing (PIP) temperature on the mechanical and thermal properties of Nextel 312 fibre SiCO ceramic matrix composites

Effects of the polymer infiltration processing (PIP) temperature between 850 and 1050 °C on mechanical thermal properties Nextel 312 fibre SiCO ceramic matrix composite were studied. The aim was to optimise material system for its proposed application as a gas-seal at temperatures up 900 °C. microstructure failure behaviour room characterised using electron microscopy (SEM, TEM), X-ray diffraction high resolution Tomography, with testing by nano-indentation, fibre-push out flexural bending. Thermo-gravimetric analysis quantified stability. Processing 950 or above gave combination effective elastic modulus, good resistance damage from tensile strain