Abstract:Multilayer coatings with oxidation resistance made of ceramic mixtures of phosphate, SiC,SiO₂, B₄C and borate on carboncarbon composites surface were proved effectivein oxidation resistance. Fabrication techniques, microstructure and oxidation resistance of coated carboncarbon composites were studied. Results show that carboncarbon composites with multilayer coatings lose only 10.37% of mass after being oxidized in air at 1  173 K for 10 h. Oxidation mass loss rateis 8.41% after being thermally circulated in air from 1 173 K, 3 min to room temperature, 2 min and from roomtemperature, 2 min to 1 173 K, 3  min in 10  hfor 100 times, which indicates that the multilayer coatings can provide excellent oxidation resistance and thermal shock resistance and be applied to the oxidationproof of carboncarbon composites aircraft brake pairs.

Key words: carboncarbon composites； aircraft brake pairs; oxidation resistant coatings； oxidationproof properties