Process for shape casting of particle stabilized metal foam
US5281251A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Nov 4, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D25/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Shaped articles are produced from foam metal by a procedure wherein the foam is formed by heating a composite of a metal matrix and finely divided solid stabilizer particles above the solidus temperature of the metal matrix and discharging gas bubbles into the molten metal composite below the surface thereof to thereby form a stabilized liquid foam on the surface of the molten metal composite. According to the novel feature the stabilized metal foam in liquid form is shape cast by being pressed into a mould and permitted to cool and solidify. The density of the cast part is essentially unchanged from that of the starting liquid foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.