A process has been developed at Georgia Tech to fabricate thin-wall hollow spheres from conventinal oxide powders at room temperatur. The polymer-bonded powder shells are fired in air to sinter the walls, leaving the shells either impervious or porous. Alternatively, the oxide shells can be preferentially reduced to produce thin-wall hollow metal spheres which can be bonded together to produce an ultra light weight closed-cell foam. The processing and properties of this unique class of low density strucures will be discussed.
Fabrication of thin-wall hollow nickel spheres and low density syntactic foams
Herstellung dünnwandiger hohler Nickelkugel und syntaktischer Schäume niedriger Wichte
1991
9 Seiten, 6 Bilder, 11 Quellen
Conference paper
English
DUENNWAND , HOHLKOERPER , RAUMTEMPERATUR , KUGEL , PULVER (FEINKORN) , KUNSTSTOFFSCHAUM , VERBUNDWERKSTOFF , METALLPULVER , WERKSTOFFSTRUKTUR , NICKEL , BINDUNG , WICHTE , PULVER , MIKROGEFUEGE
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