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.
CitationChitapalli, R. [et al.]. Stability of nanocrystalline spark plasma sintered 3Y-TZP. "Materials", 2010, vol. 3, núm. 2, p. 800-814.
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