Patent ID: 7153464
Filing Date: 2006-12-26
Classification: C04B,Y10T

Abstract:
1. A method of manufacturing a structural fiber reinforced porous ceramic matrix composite member having a predetermined pattern of cooling holes and channels therein, the cooling holes and channels formed by a process comprising the steps of: providing at least one ply of ceramic fiber material; stitching at least one fugitive thread through the at least one ply of ceramic fiber material in at least one preselected pattern; infiltrating the ceramic fiber material with a ceramic slurry; consolidating the infiltrated ceramic fiber material; and sintering the laminated and infiltrated ceramic fiber material at a temperature sufficient to decompose the at least one fugitive thread but not sufficient to damage the ceramic fiber material, leaving at least one hole and at least one channel in the ceramic matrix composite component member in place of the at least one fugitive thread.