CERAMIC SUSPENSION FOR OBTAINING PROTECTIVE HIGH-TEMPERATURE ANTIOXIDATION COATINGS ON CARBON MATERIALS

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to obtaining protective high-temperature antioxidation coatings based on ceramic suspensions or organoyttrium oxane alumoxane siloxanes for producing a composition of Y₂O₃-Al₂O₃-SiO₂ on ceramic-matrix composites of the type C/C and C/SiC to obtain composite materials that are high temperature-resistant in an oxidative atmosphere. The disclosed suspension for obtaining protective high-temperature antioxidation coatings contains binder - toluene solution of organoyttrium oxane alumoxane siloxane and filler - mixture of fine refractory powders of Al₂O₃, Y₂O₃, SiO₂, with the following ratio of components, wt %: binder (toluene solution of organoyttrium oxane alumoxane siloxane) 30-50, Al₂O₃ 14-20, Y₂O₃ 23-33, SiO₂ - the balance up to 100.;EFFECT: high heat-resistance of coated composite materials in an oxidative atmosphere.;2 ex, 1 tbl, 2 dwg