Th Wübben et al 2003 J. Phys.: Condens. Matter 15 S427 doi:10.1088/0953-8984/15/1/359
Th Wübben1,4, H Stanzick2, J Banhart3 and S Odenbach1
Show affiliationsMetal foams are prepared by mixing a metal powder and a gas-releasing blowing agent, by densifying the mix to a dense precursor and finally foaming by melting the powder compact. The foaming process of aluminium foams is monitored in situ by x-ray radioscopy. One observes that foam evolution is accompanied by film rupture processes which lead to foam coalescence. In order to elucidate the importance of oxides for foam stability, lead foams were manufactured from lead powders having two different oxide contents. The two foam types were generated on Earth and under weightlessness during parabolic flights. The measurements show that the main function of oxide particles is to prevent coalescence, while their influence on bulk viscosity of the melt is of secondary importance.
Soft matter, liquids and polymers
Issue 1 (15 January 2003)
Received 28 October 2002
Published 16 December 2002
Th Wübben et al 2003 J. Phys.: Condens. Matter 15 S427
Anatoly Neishtadt and Alexei Vasiliev 2005 Nonlinearity 18 1393
Patrick Dorey et al 2008 J. Phys. A: Math. Theor. 41 132001
Anh-Thu Le et al 2008 J. Phys. B: At. Mol. Opt. Phys. 41 081002
Thomas P Sotiriou 2006 Class. Quantum Grav. 23 1253
M P A Branderhorst et al 2009 New J. Phys. 11 115010
C Grignon et al 2009 JINST 4 P11003
P Bloembergen et al 2007 Metrologia 44 279
Luca Salasnich 2006 J. Phys. B: At. Mol. Opt. Phys. 39 1743
S Brian Edgar 2004 Class. Quantum Grav. 21 L21