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The foamed metal, that is, metal having a plurality of randomly
dispersed closed cells throughout a metal matrix, have recently
attracted many attentions for their potential on many
applications including acoustic absorption, vibration
isolation, low thermal conduction, fire isolation, electricity
and magnetism shielding, etc. On the production of foamed
metal, a preferred method is the gas forming process which uses
a heat decomposable foaming agent to generate the gas to foam
the cells. In this study, the gas forming process used in a
variety of commercial aluminum alloys and scrap aluminum alloys
was examined. The controlling factors for generate the gas to
foam the cells. In this study, the gas forming process used in
a variety of commercial aluminum alloys and scrap aluminum
alloys to make foamed aluminum alloys was examined. The
controlling factors for a steady process of making foamed
aluminum alloys including alloy decompositions, the types of
metal, a perferred method is the gas forming process which uses
a heat decomposable foaming agent to generate the gas to foam
the cells. In this study, the gas forming process used in a
variety of commercial aluminum alloys and scrap aluminum alloys
was examined. The controlling factors for generate the gas to
foam the cells. In this study, the gas forming process used in
a variety of commercial aluminum alloys and scrap aluminum
alloys to make foamed aluminum alloys was examined. The
controlling factors for a steady alloys including alloy
decompositions, the types of thickening, thickening agents and
their amounts, blowing agents and their amount, foaming
temperature, foaming time and agitating types were also
disscussed.
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