Energy-dependent in situ small-angle X -ray scattering study of nano-ceramics
Authors: Winter, Rudolf1; Messurier, Daniel Le1; Martin, Christopher M.2
Source: Crystallography Reviews, Volume 12, Number 1, January-March 2006 , pp. 3-12(10)
Publisher: Taylor and Francis Ltd
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Abstract:
Energy-dependent small-angle X-ray scattering (SAXS) measurements near the Zr-K absorption edge of a nano-scale alumina-zirconia-silicate ceramic are reported. The in situ experiments cover the temperature range from 250 to 725°C, during which the sol-gel prepared nano-particles consolidate and the glass matrix phase begins to soften, leading to a compaction of the ceramic. The dominant scattering mechanism changes from a surface-fractal type to a mass-fractal type linked to direct contact areas between nano-particles and matrix. The energy-dependent data identify the zirconium-bearing phase as dominant in the high- q range. The experimental data are placed in the context of recent advances in in situ anomalous small-angle X-ray scattering (ASAXS) and some experimental problems and solutions of near-edge scattering are discussed.Keywords: Small-range X-ray scattering; Anomalous small-angle X-ray scattering; Nano-ceramics; Refractories; Resonant scattering
Document Type: Research article
DOI: 10.1080/08893110600688964
Affiliations: 1: Department of Materials Physics, University of Wales Aberystwyth, Penglais, Aberystwyth SY23 3BZ, Wales 2: CLRC Daresbury Laboratory, Warrington WA44AD, England
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