Abstract
Commercial zirconia was milled and sedimented to separate finer and coarser particles. Then additives such as CaO and Y2O3 were added in proportions of 7 and 13 mol.% each. Wet mixing of these powders was done in the ball mill. These mixtures were then compacted through uniaxial compaction using 150 MPa of pressure to make pellets of 8 mm diameter and 3 mm height approximately. The compacts were sintered at 1700 °C under argon atmosphere during 1 h. Densification calculations revealed densities of more than 80% in all samples. Scanning electron microscopy (SEM) showed that closed porosity was present. X-ray diffraction (XRD) results confirmed the presence of cubic phase with quantities higher in samples of finer powder and 13 mol.% additive.
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Yasmeen, M., Ansar, S.A., Khan, A.A. et al. Effect of oxide additives and particle size on stabilization of treated commercial zirconia. J. of Materi Eng and Perform 10, 542–547 (2001). https://doi.org/10.1361/105994901770344683
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DOI: https://doi.org/10.1361/105994901770344683