Alumina shell molds used for investment casting in directional solidification of eutectic superalloys
US4247333A · kind A · utility
15Cited by
2References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1979 |
| Grant date | Jan 27, 1981 |
| Priority date | — |
| Expiry date | Dec 26, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B21/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An alumina investment casting mold has a microstructure characterized by the porous nature of the interconnecting alumina grains which is indicative of alumina-silica molds fired in a reducing atmosphere to remove the silica.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.