Coalescence Avalanches in Liquid Aluminum Foams
AbstractCoalescence is the rupture of a film between two adjacent bubbles in any type of liquid foam and has pronounced influence on the development of its macrostructure after solidification, mostly leading to larger pores and a wider size distribution. Foamable AlSi6Cu4 + 0.5 wt % TiH2 precursors made following the powder metallurgical route were foamed in a gas-tight X-ray transparent furnace under 500 kPa (5 bar) pressure with subsequent pressure release. Coalescence was investigated by fast X-ray radioscopy at a frame rate of 1250 Hz and an effective pixel size of 9 µm at the beamline ID-19, European Synchrotron Radiation Facility (ESRF), Grenoble, France. A self-developed program yielded the temporal and spatial detection of coalescence events in the acquired radioscopies. We observed the occurrence of film ruptures in a short temporal and spatial distance and we will refer to these phenomena as “avalanches”. View Full-Text
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Paeplow, M.; García-Moreno, F.; Meagher, A.J.; Rack, A.; Banhart, J. Coalescence Avalanches in Liquid Aluminum Foams. Metals 2017, 7, 298.
Paeplow M, García-Moreno F, Meagher AJ, Rack A, Banhart J. Coalescence Avalanches in Liquid Aluminum Foams. Metals. 2017; 7(8):298.Chicago/Turabian Style
Paeplow, Marlen; García-Moreno, Francisco; Meagher, Aaron J.; Rack, Alexander; Banhart, John. 2017. "Coalescence Avalanches in Liquid Aluminum Foams." Metals 7, no. 8: 298.
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