Methods of making composite ceramic articles having embedded filler
US4851375A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1986 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jan 17, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2237/584
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of making self-supporting ceramic composite structures having filler embedded therein includes infiltrating a permeable mass of filler with polycrystalline material comprising an oxidation reaction product obtained by oxidation of a parent metal such as aluminum and optionally containing therein non-oxidized constituents of the parent metal. The structure is formed by placing a parent metal adjacent to a permeable filler and heating the assembly to melt the parent metal and provide a molten body of parent metal which is contacted with a suitable vapor-phase oxidant. Within a certain temperature region and optionally aided by one or more dopants in or on the parent metal, molten parent metal will migrate through previously formed oxidation reaction product into contact with the oxidant, causing the oxidation reaction product to grow so as to embed the adjacent filler and provide the composite structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.