| 摘要 |
<p>A method and apparatus for the production of ceramic matrix composites by chemical vapor infiltration. The method includes exposing an infiltrated preform (80) to microwave energy, with pressure variation of the reactant gases in the processing chamber (10) and/or temperature variation of the preform during processing, to produce substantially improved composites (80). The process provides higher deposition rates within the core of the ceramic matrix composite, higher densification which advantageously initiates within the interior of the ceramic matrix composite (80) and proceeds radially outward, and a thick wall ceramic matrix composite with an overall reduced density gradient.</p> |
