Mehrphasiger Keramikmatrixverbundstoff

Details

Veröffentlichungs-Nr.

EP4790038

Anmeldetag

5. Februar 2026

Veröffentlichung

12. August 2026

Rechtsraum

EP

Abstract

A method is provided for preparing a ceramic matrix composite (CMC) having a matrix with a SiC matrix phase and an oxide matrix phase. In one process embodiment, a CMC preform containing fiber tows is subjected to chemical vapor infiltration of SiC to form a SiC matrix phase. The resultant preform is then subjected to slurry infiltration to introduce ceramic particles, e.g., rare earth oxides [e.g., RE<2>O<3>, REO, REO<2>], rare earth silicates [RE silicates], Ca silicate, and/or silicon carbide (SiC) particles, to fill void spaces in the preform. The CMC preform is then subjected to glass melt infiltration fore forming an oxide phase of the matrix. The melt infiltrated CMC preform is subjected to one or more heat treatments to form a crystalline oxide matrix phase.

Anmelder

Firma

RTX Corporation

Land

🇺🇸 USA