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Phase quantification of mullite–zirconia and zircon commercial powders using PAC and XRD techniques

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Abstract

The short range technique of the Perturbed Angular Correlation (PAC) and x-ray diffraction (Rietveld) methods have been employed to determine the phase content in commercial mullite–zirconia and zircon raw materials that are ordinarily used to produce ceramic materials. The PAC technique, which probes zirconium-containing compounds at nanoscopic level, showed that zircon contains crystalline ZrSiO4 and an important amount of a structurally distorted zircon, which is also observed accompanying monoclinic zirconia in mullite–zirconia. This particular zircon phase was not detected by the long range x-ray diffraction–Rietveld technique. After an annealing treatment, important changes in crystalline contents of the powders allow confirming, by the x-ray diffraction–Rietveld method, the preexistence of this particular zircon phase. This fact must be taken into account when preparing multicomposites based on the present raw materials.

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Correspondence to Jorge A. Martínez.

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Rendtorff, N.M., Conconi, M.S., Aglietti, E.F. et al. Phase quantification of mullite–zirconia and zircon commercial powders using PAC and XRD techniques. Hyperfine Interact 198, 211–218 (2010). https://doi.org/10.1007/s10751-010-0177-4

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  • DOI: https://doi.org/10.1007/s10751-010-0177-4

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