In-situ SAXS studies of the morphological changes of an alumina-zirconia-silicate ceramic during its formation

Abstract

Small-Angle X-ray Scattering (SAXS) is used at two energies, one either side of the zirconium K-edge, to probe the in-situ formation of an alumina-zirconia-silicate ceramic. The use of energies either side of the edge allows the decomposition of information regarding the scattering from the zirconia particles from that of the glass matrix. Porod slope data shows how the nanoparticles progress from being relatively isolated particles to becoming agglomerates as the pore network in the glass collapses. The shape of the agglomerates resembles the pore network of the glass at low temperature. The Guinier radii of the particles show the growth of the agglomerates past the Littleton softening point, whilst still resolving the primary particles.