Foamed metal and method of producing same

Details Foamed metal and method of producing same Foamed metal and method of producing same

1986-07-18

1987-12-15

Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

75 20R, 75 20F, 181168, 181294, 428613, 428688, E04B 182, B32B 310, B32B 324, B32B 1500

Patent

active

047132779

ABSTRACT:
A foamed metal which has an apparent specific gravity of from 0.2 to 0.8 and comprises an aggregate of polygonal closed cells of from 2 to 10 mm in average diameter. The foamed metal is not only light in weight, free of directionality and structurally strong but also excellent in sound-absorbing and electromagnetic shielding properties, and is useful as constructional, structural or functional material. A method for producing the foamed material comprises adding calcium as a thickening agent to molten aluminum or alloy thereof in an amount of from 0.2 to 8% by weight, followed by agitating to adjust the viscosity of the melet, then adding from 1 to 3% by weight of powdered titanium hydride as a foaming agent to the melt, and agitating the melt to effect foaming.

REFERENCES:
patent: 2751289 (1956-06-01), Elliott
patent: 2983597 (1961-05-01), Elliott
patent: 3300296 (1967-01-01), Hardy et al.
patent: 3617364 (1971-11-01), Jarema et al.
patent: 3708380 (1973-01-01), Niebylski
patent: 3711363 (1973-01-01), Jarema et al.
patent: 3816952 (1974-06-01), Niebyski et al.
patent: 3839080 (1974-10-01), Jarema et al.

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