Dresden 2006 – wissenschaftliches Programm
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MM: Metall- und Materialphysik
MM 18: Materials Design
MM 18.2: Vortrag
Dienstag, 28. März 2006, 15:00–15:15, IFW B
Synchrotron Tomography on Complex Material Systems — •A. Rack1, L. Helfen1, I. Manke2, S. Zabler2, C. Knabe3, H. Riesemeier4, M. Stiller3, J. Goebbels4, T. Baumbach1, and J. Banhart2 — 1Forschungszentrum Karlsruhe – ANKA — 2Hahn-Meitner-Institut Berlin, Bereich Strukturforschung — 3Charité Berlin — 4Bundesanstalt für Materialforschung und -prüfung, Berlin
High resolution synchrotron-tomography investigations on metal foams, commercial batteries and novel rapidly resorbable bone substitutes (ceramics like Bioglass, Cerasorb) are reported. The measurements were performed with high spatial resolutions at the synchrotrons ESRF (ID19), BESSY (BAMline) and ANKA (TOPO-CT). The use of monochromatic radiation and the application of subsequent 3d image analysis [1] enables us to separate different material phases in the volume data sets, e.g. solid matrix and blowing agents’ particles in metal foams or tissue and ceramics in a reshaping jawbone. This provides the basics for ex situ and in situ imaging on materials and devices. Firstly, the pore formation process in early stages (1% to 10% porosity) of aluminium foams could be studied ex situ. Secondly, the time and spatial dependence of a commercial batterie’s zinc powder decay was quantified in situ. Finally, quantitative determination of the formation and structural changes of the bony tissue in a given defect plus the biodegradation of the bone substitute materials within animal and human biopsies 3, 4 and 6 months after implantation were performed in vitro.
[1] J. Ohser and F. Mücklich, Statistical Analysis of Microstructures in Materials Science, John Wiley & Sons, 2000