Method for manufacturing closed-wall cellular metal
US6881241B2 · kind B2 · utility
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4References
10Claims
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Key dates
| Filing date | Nov 18, 2002 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | May 2, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C1/086
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Cellular metal foam having closed cell walls is produced by introducing gas bubbles of suitable size and at a suitable rate below the surface of an otherwise non-stirred or non-agitated molten metal bath. For example, aluminum-silicon alloy, including silicon carbide foam stabilization particles has been thus processed into cellular metal of, as low as, one to two percent relative density and with good cell walls and quite regular cell size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.