公开(公告)号：US20240009887A1

公开(公告)日：2024-01-11

申请号：US18036475

申请日：2021-11-19

Applicant: CORNING INCORPORATED

Inventor： Didier Claude Jacob ,  Jean-Pierre Henri René Lereboullet ,  James Scott Sutherland ,  Sophie Annie Vallon ,  Frédéric Camiel Verveynne

IPC: B28B7/34 ,  B28B7/18

CPC classification number: B28B7/342 ,  B28B7/18

Abstract: A process (10) of forming an internal mold (IM) and using the internal mold (IM) to press-mold an internal passage or an internal cavity within a ceramic body includes making or obtaining first and second flexible mold halves (102,104); molding a positive internal mold (IM) of a meltable or sublimable or otherwise heat-removeable material; pressing a volume of binder-coated ceramic powder with the positive internal mold (IM) inside the volume of powder to form a pressed body; heating the pressed body to remove the positive internal mold from the pressed body; and sintering the pressed body to form a monolithic ceramic body having an internal passage or an internal cavity.