Coated SiC reinforcements and composites containing same

摘要

The subject invention relates to a coated reinforcement material comprising a SiC-based reinforcement having a rare earth boride coating preferably of the general formula:PPR.sub.x B.sub. 1-x PPwhereinPPR is selected from the group consisting of Y, Sc, Gd, Tb, Dy, Ho,PPEr and combinations thereof; andPPx is from about 0.05 to about 0.66.P PThe invention further relates to a high strength, high temperature performance composite comprising a SiC-based reinforcement material having a coating comprising a rare earth boride, said coated reinforcement material disposed in a metal matrix material.