Fiber reinforced ceramic matrix composites exhibiting improved high-temperature strength

摘要

Fiber-reinforced ceramic matrix composite products comprising boron-nitride-coated reinforcing silicon carbide fibers disposed in a substantially non-porous alkaline earth aluminosilicate glass-ceramic matrix are disclosed, the matrix comprising triclinic anorthite (CaO,SrO.Al2O3.2SiO2) as the principal crystal phase and the products exhibiting unexpectedly good resistance to high-temperature degradation.