Method for producing self-supporting ceramic bodies with graded properties
US4882306A · kind A · utility
16Cited by
14References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 16, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Sep 16, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/652
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method is provided for producing a self-supporting ceramic or ceramic composite body by oxidation of a parent metal, the self-supporting body having a graded microstructure characterized by a plurality of zones differing from each other in one or more properties. The zones in the body are attained by altering the process conditions during formation of the body such that a zone of the oxidation reaction product formed posterior to said altering has at least one property different from a zone of the oxidation reaction product formed anterior to said altering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.