Influence of hydrothermal treatment temperature on oxidation modification of C/C composites with aluminum phosphates solution by a microwave hydrothermal process

► Adopt a novel approach of matrix modification using MH process. ► A H3PO4 or HPO3 continuous molten layer with Al(PO3)3 crystallites are obtained. ► Annular structure of Al(PO3)3 crystallites have a better anti-oxidation property. ► MH is an effective oxidative modification technique for C/C composites.