Al.sub.2 O.sub.3 /B.sub.4 C/SiC composite
US5164345A · kind A · utility
16Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1991 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Mar 21, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/651
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The processes of the invention involve the formation of an initial reactant mixture by combining sources of SiO.sub.2, B.sub.2 O.sub.3, aluminum, and carbon. The mixture may then optionally be shaped or compacted. The reactant mixture is then heated to start a reaction which is described by the formula: EQU 4 C+3 SiO.sub.2 +2 B.sub.2 O.sub.3 +8 Al.fwdarw.4 Al.sub.2 O.sub.3 +B.sub.4 C+3 SiC. Depending on the actual reactant mixture compositions and reaction conditions, other reactions may also occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.