Patent ID: 6497776
Filing Date: 2002-12-24
Classification: B32B,B82Y,C04B

Abstract:
A method of manufacturing a sandwich structure comprising at least two layers of ceramic matrix composite and a ceramic filler arranged between the at least two layers of ceramic matrix composite, the method comprising the steps of:(a) manufacturing each of the at least two layers of ceramic matrix composite using the steps of: (i) forming a slurry comprising a ceramic sol, filler material and a suspension medium, (ii) forming a plurality of laminates of fibers, (iii) applying the slurry to each of the plurality of laminates of fibers, (iv) stacking the plurality of laminates of fibers on a mold, (v) applying pressure to the stack of laminates of fibers to remove the suspension medium from the slurry to solidify the ceramic sol and thereby produce a ceramic composite layer, b) arranging the at least two layers of ceramic matrix composite into a predetermined shape such that there is a space between the at least two layers of ceramic matrix composite, c) filling the space between the at least two layers of ceramic matrix composite with a ceramic filler material, d) heating the at least two layers of ceramic matrix composite and ceramic filler material to produce the sandwich structure.