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Metals 2012, 2(1), 10-21; doi:10.3390/met2010010

Metal Foaming Investigated by X-ray Radioscopy

Helmholtz-Centre Berlin for Materials and Energy, Hahn-Meitner-Platz 1, Berlin 14109, Germany
Technical University Berlin, Germany, Hardenbergstrasse 36, Berlin 10623, Germany
European Synchrotron Radiation Facility, BP 220, Grenoble 38043, France
Author to whom correspondence should be addressed.
Received: 12 October 2011 / Revised: 21 November 2011 / Accepted: 19 December 2011 / Published: 27 December 2011
(This article belongs to the Special Issue Metal Foams)
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The use of X-ray radioscopy for in-situ studies of metal foam formation and evolution is reviewed. Selected results demonstrate the power of X-ray radioscopy as diagnostic tool for metal foaming. Qualitative analyses of foam nucleation and evolution, drainage development, issues of thermal contact, mold filling, cell wall rupture and more are given. Additionally, quantitative analyses based on series of images of foam expansion yielding coalescence rates, density distributions, etc., are performed by dedicated software. These techniques help us to understand the foaming behavior of metals and to improve both foaming methods and foam quality.
Keywords: metal foam; X-ray; radioscopy; synchrotron radiation metal foam; X-ray; radioscopy; synchrotron radiation

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Garcia-Moreno, F.; Mukherjee, M.; Jiménez, C.; Rack, A.; Banhart, J. Metal Foaming Investigated by X-ray Radioscopy. Metals 2012, 2, 10-21.

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