▎ 摘　　要

NOVELTY - Coating a composite structure involves forming a first slurry by combining a first pre-slurry composition with a first carrier fluid, where first pre-slurry composition comprises a first phosphate glass composition and a low coefficient of thermal expansion material, where low coefficient of thermal expansion material is a material comprising cordierite with a coefficient of thermal expansion of less than 10\asterisk10^(-)6?oC-1, applying the first slurry on a surface of the composite structure and heating the composite structure to a temperature sufficient to form a base layer on the composite structure. USE - Coating composite structure. ADVANTAGE - The phosphate-based oxidation protection systems may reduce infiltration of oxygen and oxidation catalysts into the composite structure and provides significant oxidation of the carbon-carbon composites may still occur during operation of components such as, for example, aircraft braking systems. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for following: a slurry for coating a composite structure, which comprises a carrier fluid and a first pre-slurry composition comprises a first phosphate glass composition and a low coefficient of thermal expansion material, where low coefficient of thermal expansion material is a material comprising cordierite with a coefficient of thermal expansion of less than 10\asterisk10^(-)6?oC-1;#an article, which comprises a carbon-carbon composite structure; and an oxidation protection composition including a base layer disposed on an outer surface of the carbon-carbon composite structure, where base layer comprises a first pre-slurry composition having a low coefficient of thermal expansion material, where low coefficient of thermal expansion material is a material comprises cordierite with a coefficient of thermal expansion of less than \asterisk10^(-)6?oC-1.