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Formation of crystalline bubble structure in wet metal foams
Author(s) -
Heitkam Sascha,
Fröhlich Jochen
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110316
Subject(s) - agglomerate , bubble , close packing of equal spheres , sphere packing , materials science , metal , crystallography , preference , work (physics) , crystal structure , chemical physics , chemical engineering , chemistry , composite material , mechanics , thermodynamics , physics , mathematics , metallurgy , engineering , statistics
Small monodispersed bubbles form regular patterns when they agglomerate. Many experimental investigations revealed a preference of f.c.c. packing against h.c.p. packing in these structures, that could not yet be explained. In the present work this feature is reproduced numerically and analyzed. It is shown that drainage from layers above causes the preference. By investigating the transient crystal growth and packing rearrangement a mechanism is found that reduces the stability of h.c.p. packing and explains the phenomenom. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)