Methods for manufacturing foamable metal bodies

Details Methods for manufacturing foamable metal bodies Methods for manufacturing foamable metal bodies

1991-05-31

1992-09-29

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making porous product

419 37, 419 46, 419 50, 264 44, 264 54, B22F 100

Patent

active

051512467

ABSTRACT:
A method is described for manufacturing foamable metal bodies in which a ture (17) of a metal powder (15) and a gas-splitting propellent powder (16) is hot-compacted to a semifinished product (19) at a temperature at which the joining of the metal powder particles takes place primarily by diffusion and at a pressure which is sufficiently high to hinder the decomposition of the propellent in such fashion that the metal particles form a solid bond with one another and constitute a gas-tight seal for the gas particles of the propellant. The foamable metal body can also be produced by rolling. In addition, a use of the foamable metal body (19) thus produced for manufacturing a porous metal body (21) is proposed.

REFERENCES:
patent: 3087807 (1963-04-01), Allen et al.
patent: 3848666 (1974-11-01), Valdo
patent: 3929425 (1975-12-01), Valdo
patent: 3940262 (1976-02-01), Niebylski et al.
patent: 3941182 (1976-03-01), Bjorksten et al.
patent: 4973358 (1990-11-01), Jin et al.

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