Abstract: Spark plasma sintered 3Y-TZP has been investigated with respect to hydrothermal ageing and grinding. The sintering was performed between the temperatures of 1,100 and 1,600 °C for a soaking time of 5 minutes and the resulting materials were obtained with grain sizes between 65 to 800 nm and relative densities between 88.5 to 98.8%. Experiments on hydrothermal ageing in water vapour at 131 °C, 2 bars during 60 hours shows that phase stability is retained, elastic modulus and hardness of near surface region measured by nanoindentation does not change in fine grain (<200 nm) materials, in spite of porosity. In ground specimens, very small amount of transformation was found for all grain sizes studied.
Keywords: 3Y-TZP; grain size; degradation; phase transformation
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Chintapalli, R.; Mestra, A.; García Marro, F.; Yan, H.; Reece, M.; Anglada, M. Stability of Nanocrystalline Spark Plasma Sintered 3Y-TZP. Materials 2010, 3, 800-814.
Chintapalli R, Mestra A, García Marro F, Yan H, Reece M, Anglada M. Stability of Nanocrystalline Spark Plasma Sintered 3Y-TZP. Materials. 2010; 3(2):800-814.
Chintapalli, Ravikiran; Mestra, Alvaro; García Marro, Fernando; Yan, Haixue; Reece, Michael; Anglada, Marc. 2010. "Stability of Nanocrystalline Spark Plasma Sintered 3Y-TZP." Materials 3, no. 2: 800-814.