Patent ID: 11858862
Assignee: ROLLS-ROYCE HIGH TEMPERATURE COMPOSITES, INC.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B  F | IPC C

Claim 16:
17. A method to produce a ceramic matrix composite part, the method comprising:
providing a ceramic fiber preform, the ceramic fiber preform including a three-dimensional framework of a plurality of ceramic fibers;
slurry infiltrating the ceramic fiber preform
adding a layer of ceramic machinable stock to a only target area of the ceramic fiber preform, wherein the target area is an area of the ceramic matrix composite part with precision machined surface features, wherein the target area comprises less than a total surface area of the ceramic matrix composite part;
melt infiltrating the ceramic fiber preform;
forming the ceramic matrix composite part by cooling the melt infiltrated ceramic fiber preform;
machining the part in the target area where the machinable stock is located; and
forming a precision feature in the machinable stock disposed on the target area.