Monolithic ceramic attachment bushing incorporated into a ceramic matrix composite component and related method
AssigneeGeneral Electric Company
InventorsMark Stewart Schroder, Paul Stephen DiMascio, Randall Richard Good
Life of this patent
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Abstract
12A high temperature gas turbine component includes an inner core made of a monolithic ceramic material embedded within an outer CMC shell. The inner core may be formed with a through hole, blind hole, wear pads and the like. A method of making the bushing includes the steps of a) forming an inner core of silicon nitride or silicon carbide; and b) applying a ceramic matrix composite material over substantially all of the inner core.
Claims26
A component for use in a gas turbine comprising:
- an attachment bushing comprised of a monolithic ceramic material having front and back faces and a through-hole formed therein of predetermined diameter and adapted to receive a bolt shank or pin, said attachment bushing substantially encased within an outer shell composed of CMC material.
A gas turbine component comprising an inner attachment bushing made of silicon nitride or silicon carbide, said attachment bushing having a first outer diameter and a through-hole formed therein having a second diameter, said first diameter being 2.5-4 times said second diameter;
- wherein attachment bushing is enclosed within an outer shell of ceramic matrix composite material.
A gas turbine component including an attachment bushing of silicon nitride or silicon carbide material, said attachment bushing substantially encased within an outer shell composed of CMC material, wherein said attachment bushing is formed with a through hole, opposite ends of which are flush with respective opposite sides of said outer shell.
A gas turbine component including an attachment bushing of silicon nitride or silicon carbide material, said attachment bushing substantially encased within an outer shell composed of CMC material, wherein said attachment bushing is formed with a through hole, opposite ends of which are recessed relative to respective opposite sides of said outer shell.
A gas turbine component including an attachment bushing of silicon nitride or silicon carbide material, said attachment bushing substantially encased within an outer shell composed of CMC material, wherein said inner core is formed with raised wear pads that are exposed on respective opposite sides of said outer shell.
A method of making a gas turbine component comprising:
- a) forming an attachment bushing of silicon nitride or silicon carbide;
- and
- b) applying a ceramic matrix composite material over substantially all of said attachment bushing with the exception of front and rear flat faces thereof.
Dependencies are inferred from the claim text.