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1 Department of Energy Conversion and Storage, Technical University of Denmark 2 Imaging and Structural Analysis, Department of Energy Conversion and Storage, Technical University of Denmark 3 Karlsruhe Institute of Technology 4 European Synchrotron Radiation Facility 5 Fraunhofer Gesellschaft 6 European Synchrotron Radiation Facility
3D x-ray diffraction contrast tomography (DCT) is a non-destructive technique for the determination of grain shape and crystallography in polycrystalline bulk materials. Using this technique, a strontium titanate specimen was repeatedly measured between annealing steps.. A systematic analysis of the growth history of selected grains before and after the ex-situ annealing step allows to extract the topological and morphological changes during grain growth. Furthermore, misorientation as well as interface orientation information of the microstructure reconstructions have been determined. The interface normal distribution clearly shows a preference for (100) oriented interfaces in the selected grains when annealed at 1600°C. This observation can be connected to existent interfacial energy estimations resulting from capillarity vector reconstructions. © 2012 Materials Research Society.
Materials Research Society Symposium Proceedings, 2012, Vol 1421
Annealing; Crystallography; Nondestructive examination; Normal distribution; Strontium titanates; Three dimensional; Three dimensional computer graphics; Tomography; X ray diffraction; Grain growth
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2011 MRS Fall Meeting & Exhibit, 2012