Diffraction Line-Broadening Analysis of Al2O3/Y-TZP Ceramic Composites by Neutron Diffraction Measurement
K. Fan, J. Ruiz-Hervias, C. Baudin, J. Gurauskisdownload PDF
Time-of-flight neutron diffraction was used for through-thickness measurement in a series of Al2O3/Y-TZP (alumina/tetragonal ZrO2 stabilized with 3 mol.% Y2O3) ceramic composites. Different zirconia contents (5 vol.% and 40 vol.%) and green processing routes (a novel tape casting and conventional slip casting) were investigated. Diffraction line broadening analysis was carried out by using the Rietveld refinement method combined with the “double-Voigt” modelling to obtain the domain size and microstrain in the different phases. The results indicate that peak broadening is noticeable in zirconia (associated to microstrains) but not in alumina. The microstructure and non-uniform microstrains were mainly influenced by the Y-TZP content in the studied Al2O3/Y-TZP composites, irrespective of the measured direction and the fabrication process.
Ceramic Composites, Tape Casting, Neutron Diffraction, Peak Broadening, Microstrain
Published online 4/20/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: K. Fan, J. Ruiz-Hervias, C. Baudin, J. Gurauskis, ‘Diffraction Line-Broadening Analysis of Al2O3/Y-TZP Ceramic Composites by Neutron Diffraction Measurement’, Materials Research Proceedings, Vol. 4, pp 53-58, 2018
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