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Title: Closed cell metal foam method

Abstract

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 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.

Inventors:
 [1]
  1. Kennewick, WA
Issue Date:
Research Org.:
Battelle Memorial Institute, Columbus, OH (United States)
OSTI Identifier:
863129
Patent Number(s):
4099961
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
closed; cell; metal; foam; method; foamed; metals; alloys; cellular; structure; prepared; heating; containing; entrapped; inert; gas; uniformly; distributed; throughout; temperature; melting; maintaining; period; time; sufficient; permit; expand; forming; individual; cells; molten; expanding; foaming; formation; reached; desired; amount; cooled; below; void; density; controlled; predetermining; maintained; useful; preparing; material; uniformly distribute; closed cell; metal foam; individual cells; melting temperature; time sufficient; molten metal; inert gas; metal alloy; uniformly distributed; metal alloys; distributed throughout; individual cell; desired amount; trapped gas; containing entrapped; cell metal; gas entrapped; gas uniformly; cellular structure; /75/204/428/

Citation Formats

Patten, James W. Closed cell metal foam method. United States: N. p., 1978. Web.
Patten, James W. Closed cell metal foam method. United States.
Patten, James W. Sun . "Closed cell metal foam method". United States. https://www.osti.gov/servlets/purl/863129.
@article{osti_863129,
title = {Closed cell metal foam method},
author = {Patten, James W},
abstractNote = {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 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}

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