Synchrotron-based radioscopy employing spatio-temporal micro-resolution for studying fast phenomena in liquid metal foams.
Investigations of pore coalescence and individual cell wall collapse in an expanding liquid metal foam by means of X-ray radioscopy with spatio-temporal micro-resolution are reported. By using white synchrotron radiation for imaging, the rupture of a film and the subsequent merger of two neighbouring bubbles could be recorded with a time sampling rate of 40000 frames s(-1) (25 micros exposure time) and a spatial sampling rate of 20 microm. The rupture time of a cell wall was found to be in the range of 300 micros. This value is in agreement with theoretical considerations which assume an inertia-dominated rupture time of cell walls in liquid metal foams.
Rack
A
A
European Synchrotron Radiation Facility, 38043 Grenoble Cedex, France. arack@snafu.de
García-Moreno
F
F
Baumbach
T
T
Banhart
J
J
D005740:Gases / Q000737:chemistry*; D008422:Materials Testing / Q000379:methods*; D008670:Metals / Q000737:chemistry*; D016062:Porosity; D012996:Solutions / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission; D017356:Synchrotrons
D005740:Gases; D008670:Metals; D012996:Solutions