Effect of Sintering Profiles on the Properties and Ageing Resistance of Y-tzp Ceramic

Abstract

A commercially available Y-TZP ceramic powder was fabricated under four different sintering profiles in order to investigate the effects of conventional single-stage sintering (SSS) with dwell times of 1 min and 2 h, respectively, compared with two-stage sintering (TSS), on the physical and mechanical properties of Y-TZP. Sintering was performed up to 1400 o C at a ramp rate of 10 o C/min. It was revealed that samples sintered via TSS yielded better properties than the SSS samples sintered at 1400 o C using a dwell time of 2 h. In the hydrothermal ageing test, TSS samples did not undergo low-temperature degradation via the tetragonal to monoclinic phase transformation. Nevertheless, it was found by XRD analysis that Y-TZP ceramics sintered by the SSS method using a short dwell time of 1 min were effective in maintaining tetragonal phase stability after 50 h of exposure to superheated steam conditions.

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Cite this paper

@inproceedings{Sivakumar2014EffectOS, title={Effect of Sintering Profiles on the Properties and Ageing Resistance of Y-tzp Ceramic}, author={Siva P Sivakumar and Siva Ramesh and Chin Yew Tan and Weidi Teng}, year={2014} }