Designing porous C/C composites for oxidation resistance with an analytical model based on the kinetic and architectural features of fibers and matrix

Carbon/Carbon composites used in rocket propulsion contain many process-related pores and have a porosity-dependent oxidation recession rate. A 1D analytical model has been developed to describe this behavior assess the structure-reactivity relationship for of such composites. The compared experiments validation. Oxidation carried out using samples featuring individually different matrix fractions thermogravimetric analysis apparatus under dry air. Post-test morphologies were characterized with X-ray micro-computerized tomography 3D-image correlation technique. Finally, guidelines are given design optimization porous C/C respect resistance.