A method for protection against oxidation and use of a fiber reinforced carbon composite materials made according to the process of the composite material

摘要

A method for the oxidation protection of fiber-reinforced, carbon-containing composite materials, the matrix at least in the surface layer contains silicon carbide (sic), comprising the steps ofa) impregnation of the composite material with an aqueous, phosphate-containing solution,b), after drying, carrying out a heat treatment at a temperature which is at least is sufficient in order to the dried solution in not soluble compounds, for the formation of a self-healing glass, are suitable,characterized in thatthe oxidation protection of a fiber-reinforced, carbonaceous composite material is formed, the matrix at least in the surface layer in addition to silicon carbide (sic) but also silicon (si) and / or silicon alloys, and thatthe composite material before the step a) or between steps a) and b) or during or after the step b) for the formation of silicon oxide (sio₂) is treated with an oxidising action.