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AssigneeGeneral Electric Company
InventorsThomas J. Dunyak, James D. Steibel, David R. Chang, Peggy E. Jones
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A method of removing a core from a CMC component in which the core was used to form an internal cavity. According to one embodiment of the invention, the core is removed from a fully densified CMC component by heating the component and core to a temperature at which the core deteriorates but below a temperature at which the component would melt or otherwise be damaged. According to a second embodiment of this invention, the component is only partially densified, and then impregnated with a coating material that is resistant to a leaching compound capable of removing the core. The core can then be removed using the leaching compound without damage to the internal surfaces of the component defined by the core when the component was fabricated.
A method of forming a ceramic matrix composite component, the method comprising the steps of:
A method of forming a ceramic matrix composite component, the method comprising the steps of:
A core for forming a ceramic matrix composite component, the core comprising a material selected from the group consisting of elemental silicon-based materials, a ceramic body coated with an elemental silicon-based material, and particulate ceramic materials bonded together with an elemental silicon-based material.
Dependencies are inferred from the claim text.