Process for preparing ceramic-metal composite bodies
US5214011A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1991 |
| Grant date | May 25, 1993 |
| Priority date | — |
| Expiry date | Aug 30, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/652
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is presented for the fabrication of a metal/ceramic composite by a non-vapor phase oxidation of a molten metal by contacting said molten metal at an elevated temperature with a sacrificial ceramic preform. The shape of the preform is retained but the ceramic preform is reduced, oxidizing the molten metal. A preferred sacrificial ceramic preform is silica, but can also be, for example, mullite, titania or zirconia, and the preferred molten metal is aluminum or an aluminum alloy. Thus, for example, is produced from immersing a silica preform into molten aluminum alloy, an Al/Al.sub.2 O.sub.3 composite metal/ceramic article which does not contain silica or silicon and which is extremely tough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.