SILICON CARBIDE CERAMIC MATRIX COMPOSITES CONTAINING A RARE EARTH COMPOUND

文件类型：PDF文档
文件大小：125K
A method of producing a silicon carbide (SiC) ceramic matrix composite (CMC) comprising incorporating yttrium or ytterbium into a CMC using a slurry that is infiltrated. Yttrium or ytterbium is added in the form of an oxide, silicate, silicide, or aluminum-silicon eutectic alloy. The slurry further can comprise aluminum oxide. As a subsequent step molten Si can be infiltrated. The end product is a ceramic matrix composite (CMC) comprising a rare earth silicide, such as YSi, Y5Si4, Y5Si3, Yb3Si5 or YbSi.