Energy-dependent in-situ small-angle x-ray scattering study of nano-ceramics

Rudolf Winter, Daniel Le Messurier, Christopher M. Martin

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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 250C to 725C, 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.
Original languageEnglish
Publication statusPublished - Jul 2006

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