Method for fabricating a ceramic material
AssigneeUnited Technologies Corporation
InventorsWayde R. Schmidt, Tania Bhatia Kashyap, Paul Sheedy
Life of this patent
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Abstract
A method for fabricating a ceramic material includes impregnating a porous structure with a mixture that includes a preceramic polymer and a filler. The filler includes at least one free metal. The preceramic polymer material is then rigidized to form a green body. The green body is then thermally treated to convert the rigidized preceramic polymer material into a ceramic matrix located within pores of the porous structure. The same thermal treatment or a second, further thermal treatment is used to cause the at least one free metal to move to internal porosity defined by the ceramic matrix or pores of the porous structure.
Claims20
A method for fabricating a ceramic material, the method comprising:
- infiltrating a porous structure with a mixture that includes a preceramic material and a filler, the filler including at least one free metal;
- rigidizing the preceramic material to form a green body;
- and
- thermally treating the green body to convert the rigidized preceramic material into a ceramic matrix within pores of the porous structure, wherein the thermal treatment or a second, further thermal treatment is used to cause the at least one free metal to move to internal porosity defined by the ceramic matrix or residual open pores of the porous structure.
A ceramic component comprising:
- a porous structure;
- a polymer-derived ceramic matrix within pores of the porous structure, the polymer-derived ceramic matrix defining internal pores from a conversion of polymer to ceramic to form the polymer-derived ceramic matrix;
- and
- at least one of a free metal and a free metal-derived compound within the internal pores of the polymer-derived ceramic matrix.
Dependencies are inferred from the claim text.