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Three-dimensional grain structure of sintered bulk strontium titanate from X-ray diffraction contrast tomography

: Syha, M.; Rheinheimer, W.; Bäurer, M.; Lauridsen, E.M.; Ludwig, W.; Weygand, D.; Gumbsch, P.

Preprint urn:nbn:de:0011-n-1900522 (1.7 MByte PDF)
MD5 Fingerprint: e983f2419cce3cf22a0003c7ecf18a1d
Created on: 23.4.2013

Scripta materialia 66 (2012), No.1, pp.1-4
ISSN: 1359-6462
Deutsche Forschungsgemeinschaft DFG
Deutsche Forschungsgemeinschaft DFG
Journal Article, Electronic Publication
Fraunhofer IWM ()
3-D reconstruction; microstructure; x-ray diffraction; perovskite; 3-D tomography; growth; SrTiO3; polycrystals; boundaries

The three-dimensional grain boundary network of sintered bulk strontium titanate is reconstructed using X-ray diffraction contrast tomography, a non-destructive technique for determining the grain shape and crystallographic orientation in polycrystals that is ideally suited for detailed studies of microstructure evolution. We present the first microstructure reconstruction of a perovskite comprising 849 grains and detailed interface orientation evaluations of individual grains. Comparison of structural and topological quantities to metallographic investigations and statistical grain models demonstrates the method's validity and applicability.