Increasing the density of a bond coat
AssigneesROLLS-ROYCE plc, Rolls-Royce High Temperature Composites Inc.
InventorsSungbo Shim, Robert Shinavski, Ann Bolcavage
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Abstract
An example method may include applying a bond coat comprising silicon or a silicon alloy on a surface of a ceramic or ceramic matrix composite substrate, where the bond coat comprises a plurality of pores; infiltrating a precursor into at least some pores of the plurality of pores; and heat-treating the bond coat and the precursor, where after heat-treating a porosity of the bond coat is less than about 5 vol. %, and where after heat-treating, the bond coat is substantially free of continuous porosity extending through a thickness of the bond coat.
Claims20
A method comprising:
- applying a bond coat comprising silicon or a silicon alloy on a surface of a ceramic or ceramic matrix composite substrate, wherein the bond coat comprises a plurality of pores;
- infiltrating a precursor into at least some pores of the plurality of pores;
- and
- heat-treating the bond coat and the precursor, wherein after heat-treating a porosity of the bond coat is less than about 5 vol. %, and wherein after heat-treating, the bond coat is substantially free of continuous porosity extending through a thickness of the bond coat.
Dependencies are inferred from the claim text.