Silicone binders for investment casting
AssigneeGeneral Electric Company
InventorsThomas Francis McNulty, John Thomas Leman
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Abstract
A green product for use in fabricating a ceramic article comprises a ceramic powder immobilized within a silicone matrix, wherein the silicone matrix comprises one or more cross linked or polymerized silicone monomers and/or oligomers, wherein the one or more cross linked or polymerized silicone monomers and/or oligomers have a alkenyl reactive functional group and a hydride reactive functional group. Processes for forming a green product and a ceramic core with the silicone monomers and/or oligomers are also disclosed.
Claims13
A green product for use in fabricating a ceramic core, comprising a ceramic powder immobilized within a silicone matrix, wherein the silicone matrix comprises one or more cross linked or polymerized silicone monomers and/or oligomers wherein the one or more cross linked or polymerized silicone monomers and/or oligomers, prior to cross linking and/or polymerization, contain at least three alkenyl reactive functional groups or at least three hydride reactive functional groups per mole of monomer or oligomer;
- and have a viscosity of about 1 to about 1,000 centistokes;
- wherein the green product has the shape of the desired ceramic core, and wherein the outer surface of the ceramic core defines the shape of at least one internal cavity of a turbine component.
Dependencies are inferred from the claim text.