Coated reinforcements for high temperature composites and composites made therefrom

摘要

The subject invention relates to a coated reinforcement material comprising a Si-containing reinforcement having a coating of the general formula: AlxOyNz wherein x is up to about 60 atomic % of the coating; y is from about 20 atomic % to about 55 atomic % of the coating; and z is from about 5 atomic % to about 45 atomic % of the coating, with the proviso that x+y+z=100. The invention further relates to a high strength, high temperature performance composite comprising a Si-containing reinforcement material having a coating comprising aluminum, oxygen and nitrogen, said coated reinforcement material in combination with a matrix material.