Please use this identifier to cite or link to this item: http://dx.doi.org/10.14279/depositonce-8751
Main Title: Coalescence Avalanches in Liquid Aluminum Foams
Author(s): Paeplow, Marlen
García-Moreno, Francisco
Meagher, Aaron Joseph
Rack, Alexander
Banhart, John
Type: Article
Language Code: en
Abstract: Coalescence 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”.
URI: https://depositonce.tu-berlin.de/handle/11303/9710
http://dx.doi.org/10.14279/depositonce-8751
Issue Date: 4-Aug-2017
Date Available: 5-Aug-2019
DDC Class: 600 Technik, Technologie
Subject(s): coalescence
avalanches
cascades
metal foam
film rupture
bubbles
License: https://creativecommons.org/licenses/by/4.0/
Journal Title: Metals
Publisher: MDPI
Publisher Place: Basel
Volume: 7
Issue: 8
Article Number: 298
Publisher DOI: 10.3390/met7080298
EISSN: 2075-4701
Appears in Collections:FG Struktur und Eigenschaften von Materialien » Publications

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