Sutharsini, U. and Ramesh, S. and Wong, Y.H. and Misran, H. and Yusuf, F. and Tan, C.Y. and Purbolaksono, J. and Teng, W.D. (2014) Effect of sintering holding time on low-temperature degradation of yttria stabilised zirconia ceramics. Materials Research Innovations, 18 (S6). S6-408-S6-411. ISSN 1432-8917, DOI https://doi.org/10.1179/1432891714Z.000000000988.
Full text not available from this repository.Abstract
Effect of sintering holding time on low-temperature degradation of 3 mol-% yttria stabilised zirconia was investigated. Yttria stabilised zirconia samples were sintered using a two-step sintering cycle. The samples were initially heated to 1500°C with the heating rate of 10°C min−1, held for 1 minute before cooling down to 1200°C and kept at this temperature for varying holding times from 0 to 10 hours. The phase contents of the zirconia samples were measured using X-ray diffractometer, and the microstructural evaluation was evaluated by field emission scanning electron microscope. All the as-sintered samples exhibited 100% tetragonal phase and bulk density of about 6 g cm−3. The low-temperature degradation study was conducted under autoclave condition containing superheated steam at 180°C and 10 bar vapour pressure for periods up to 24 hours. The results showed that the tetragonal to monoclinic phase transformation decreased with increasing holding time up to 3 hours and thereafter it increased. The sample sintered with 3-hour holding time showed better aging resistance than other samples. It was found that the grain size of this sample was the lowest (0·29 μm) when compared to other samples.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Yttria Stabilised Zirconia; Two-step sintering; Low-temperature degradation; Phase transformation; Grain size |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 11 Mar 2015 04:28 |
| Last Modified: | 11 Mar 2015 04:28 |
| URI: | http://eprints.um.edu.my/id/eprint/13009 |
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