Abstract
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.
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Acknowledgments
This work was supported by the Deutsche Forschungsgemeinschaft (DFG) under Contract WE3544/4-1 and BA4143/2-1. We kindly acknowledge the Karlsruhe House of Young Scientists (KHYS) for covering travel expenses of one of the authors (M.S.), the European Synchrotron Radiation Facility (ESRF) for provision of beam time (MA-970) and Loredana Erra, beam line ID11, for technical support.
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Syha, M., Rheinheimer, W., Bäurer, M. et al. Interface Orientation Distribution during Grain Growth in Bulk SrTiO3 Measured by Means of 3D X-Ray Diffraction Contrast Tomography. MRS Online Proceedings Library 1421, 58–62 (2012). https://doi.org/10.1557/opl.2012.831
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DOI: https://doi.org/10.1557/opl.2012.831