Effect of sintering profiles on the properties and ageing resistance of Y-TZP ceramic
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 mechanic...
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| Main Authors: | , , , , |
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| Format: | Article |
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Universiti Malaysia Pahang
2011
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/6562/ http://ijame.ump.edu.my/images/Volume_4/5_Sivakumar%20et%20al.pdf http://dx.doi.org/10.15282/ijame.4.2011.3.0033 |
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| Summary: | 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 1400oC at a ramp rate of 10oC/min. It was revealed that samples sintered via TSS yielded better properties than the SSS samples sintered at 1400oC 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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