Degradation resistance of 3Y-TZP ceramics sintered using spark plasma sintering

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Abstract

Commercially available tetragonal zirconia powder doped with 3 mol% of yttria has been sintered using spark plasma sintering (SPS) and has been investigated for its resistance to hydrothermal degradation. Samples were sintered at 1100, 1150, 1175 and 1600 °C at constant pressure of 100 MPa and soaking for 5 minutes, and the grain sizes obtained were 65, 90, 120 and 800 nm, respectively. Samples sintered conventionally with a grain size of 300 nm were also compared with samples sintered using SPS. Finely polished samples were subjected to artificial degradation at 131 °C for 60 hours in vapour in auto clave under a pressure of 2 bars. The XRD studies show no phase transformation in samples with low density and small grain size (<200 nm), but significant phase transformation is seen in dense samples with larger grain size (>300 nm). Results are discussed in terms of present theories of hydrothermal degradation. © 2009 IOP Publishing Ltd.

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APA

Chintapalli, R., Marro, F. G., Valle, J. A., Yan, H., Reece, M. J., & Anglada, M. (2009). Degradation resistance of 3Y-TZP ceramics sintered using spark plasma sintering. In IOP Conference Series: Materials Science and Engineering (Vol. 5). https://doi.org/10.1088/1757-899X/5/1/012014

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