Closed cell metal foam method
Foamed metals and metal alloys which have a closed cellular structure are prepared by heating a metal body containing entrapped inert gas uniformly distributed throughout to a temperature above the melting point of the metal and maintaining the body at this temperature for a period of time sufficient to permit the entrapped gas to expand, forming individual cells within the molten metal, thus expanding and foaming the molten metal. After cell formation has reached the desired amount, the foamed molten metal body is cooled to below the melting temperature of the metal. The void area or density of the foamed metal is controlled by predetermining the amount of inert gas entrapped in the metal body and by the period of time the metal body is maintained in the molten state. This method is useful for preparing foamed metals and metal alloys from any metal or other material of which a body containing entrapped inert gas can be prepared.
- Assignee:
- Department of Energy
- Patent Number(s):
- US 4099961
- OSTI ID:
- 6431776
- Resource Relation:
- Patent File Date: Filed date 21 Dec 1976; Other Information: PAT-APPL-752,935
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
08 HYDROGEN
ALLOYS
FABRICATION
TRAPPING
HYDROGEN
STORAGE
METALS
AIRCRAFT
DENSITY
FOAMS
GASES
PLUTONIUM
TITANIUM
TITANIUM HYDRIDES
TURBINE BLADES
VOIDS
ACTINIDES
COLLOIDS
CRYOGENIC FLUIDS
DISPERSIONS
ELEMENTS
FLUIDS
HYDRIDES
HYDROGEN COMPOUNDS
NONMETALS
PHYSICAL PROPERTIES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRANSURANIUM ELEMENTS
360101* - Metals & Alloys- Preparation & Fabrication
080200 - Hydrogen- Storage
Transport & Handling