Sol-gel method of making silicon carbide and of protecting a sub

Coating processes – Heat decomposition of applied coating or base material – Coating decomposed to form carbide or coating carbonized

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4273977, 423345, B05D 302

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active

052564487

ABSTRACT:
Method of making a coherent film of silicon carbide on a surface, comprising forming a solution in the solvent of from 0.05 to 0.3 moles alkoxy silicon per mole of water, the solution also containing an acid catalyst and a carbonaceous material in the ratio 1 to 3 moles carbon per mole of silicon. Hydrolysis is allowed to occur followed by removal of volatile material after hydrolysis at this or an earlier stage; applying the solution to the surface; and thereafter heating at at least 1300.degree. C. The solvent comprises 0.3 to 1 mole of acetone per mole of water.

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