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US 2021/0276923 A1Published application
Composite ceramic bodies and applications thereof
OwnerJason GOLDSMITHinventor
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Abstract
In one aspect, ceramic bodies are described herein exhibiting composite architecture. Briefly, a composite ceramic body comprises a bulk region including a mixture of alpha-SiAlON and beta-SiAlON, and a surface region covering the bulk region, the surface region having a residual stress of −500 MPa to 500 MPa and a thickness of at least 5 μm.
Claims18
A composite ceramic body comprising:
- a bulk region comprising a mixture of alpha-SiAlON and beta-SiAlON;
- and
- a surface region covering the bulk region, the surface region comprising a mixture of alpha-SiAlON and beta-SiAlON and having a residual stress of −100 MPa to 300 MPa and a thickness of at least 5 μm, wherein the composite ceramic body is in the as-sintered state.
Dependencies are inferred from the claim text.