Abstract
The ultrasonic spray pyrolysis (USP) technique was used for synthesis of alumina- and zirconia-based powders. The starting agents were aqueous solutions, atomized by the ultrasonic spray generator and pyrolized in the furnace under the open-air conditions. The powders prepared by USP were in the form of solid and hollow aggregates (spheres) consisted of nanosize amorphous grains as determined by the microscopy and the X-ray diffraction techniques. The alumina-based powders were consolidated by the pulse plasma sintering resulting in single-phase materials. Different behavior of solid and hollow particles during the isostatic sintering is found; a higher degree of deformation of spheres is observed in the second case.
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Kucza, W., Obłąkowski, J., Gajerski, R. et al. Synthesis and characterization of alumina- and zirconia-based powders obtained by the ultrasonic spray pyrolysis. J Therm Anal Calorim 88, 65–69 (2007). https://doi.org/10.1007/s10973-006-8075-3
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DOI: https://doi.org/10.1007/s10973-006-8075-3