Foam Metal

foam metal

[¦fōm ′med·əl]
Cast metal with finely divided gas bubbles evenly distributed throughout the body of the metal; an example is foam aluminum.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Foam Metal


a metal or alloy with a cellular internal structure in which gas is contained in thin-walled metal pockets.

Foam metals are produced by introducing hydrides of various elements, for example, titanium and zirconium, into the molten metal. The hydrogen that is released during the decomposition of the hydride foams the metal, and the resultant cellular structure is fixed by rapid cooling. The properties of foam metals depend on the amount of absorbed gas and on the properties of the starting metal or alloy. Aluminum and magnesium are among the metals that are foamed.

Foam metals are used in thermal insulation and as fillers to impart rigidity to structures.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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The foam metal structures are used in many types of machine tools for impact protection as vibration isolators, in other equipment and sometimes components (ISOTECH, inc.
The simplified models of foam metal structures were prepared using FEM.
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It is used as foam metal of a different type of material such as copper, nickel, zinc, lead, molybdenum, rhenium, stainless steel, tin and titanium, and alloys such as nickel-iron, nickel and copper, nickel and chromium, tungsten, and nickel and of iron, nickel and chromium.
Increasingly used also in this property foams in automotive, wherein the foam metal used to reinforce the hollow profile in the design of safe crumple zones.