Castable zinc-aluminum alloys
US4789522A · kind A · utility
3Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1987 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Nov 24, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C18/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved castable hypereutectic zinc-aluminum alloy which is free from underside shrinkage is described. Small additions, from about 0.25% and up to about 2 wt% of rare earth metal, preferably in the form of misch metal, to known zinc-aluminum alloys containing from about 20% and up to about 40 wt% aluminum have been found to prevent underside shrinkage in castings with a cross section up to about six inches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.