Influence of silica content on the stabilization of tetragonal zirconia for biomedical applications

Tetragonal phase of Zirconia (ZrO 2 ) attracts more attention when referring to the phase development compared to the monoclinic and cubic phase. Tetragonal phase offers many favorable features such as high chemical and wear resistance, high fracture toughness and hardness. However, tetragonal ZrO 2...

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Main Authors: Mokhtar, M., Ali, W. F. F. W., Djuansjah, J. R. P.
Format: Conference or Workshop Item
Published: 2019
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Online Access:http://eprints.utm.my/id/eprint/88769/
https://dx.doi.org/10.1063/1.5089409
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spelling my.utm.887692020-12-29T04:19:07Z http://eprints.utm.my/id/eprint/88769/ Influence of silica content on the stabilization of tetragonal zirconia for biomedical applications Mokhtar, M. Ali, W. F. F. W. Djuansjah, J. R. P. TJ Mechanical engineering and machinery Tetragonal phase of Zirconia (ZrO 2 ) attracts more attention when referring to the phase development compared to the monoclinic and cubic phase. Tetragonal phase offers many favorable features such as high chemical and wear resistance, high fracture toughness and hardness. However, tetragonal ZrO 2 is not stable at room temperature, make it having issues in cooling process. The difficulty to maintain tetragonal phase at room temperature was assisted by the reversible process of ZrO 2 . This reversible process that happened at tetragonal to monoclinic phase transition, caused the monoclinic phase alone are presented after cooling process. The transformation of tetragonal to monoclinic is accompanied by the increase in volume, in which can lead to the propagation of cracks. Thus, ZrO 2 ceramic became a brittle material instead of their high fracture toughness and hardness. Silica (SiO 2 ) was introduced as the dopant component to overcome this transformation-induced cracking when ZrO 2 was sintered above 800 °C. An attempt was made in this work to investigate the effect of calcination temperature and SiO 2 concentrations toward ZrO 2 stabilisation by using sol-gel method. The phase transformation of ZrO 2 and its morphology were characterized via X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). From the XRD analyses, it was determined that SiO 2 with 0.5 M concentration has played a crucial role in the stabilisation of tetragonal ZrO 2 . However, both monoclinic and cubic were found when the concentration of SiO 2 is lower than 0.5M. 2019 Conference or Workshop Item PeerReviewed Mokhtar, M. and Ali, W. F. F. W. and Djuansjah, J. R. P. (2019) Influence of silica content on the stabilization of tetragonal zirconia for biomedical applications. In: International Conference on X-Rays and Related Techniques in Research and Industry 2018, ICXRI 2018, 18-19 Aug 2018, Grand Riverview Hotel Kota Bharu, Kelantan, Malaysia. https://dx.doi.org/10.1063/1.5089409
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Mokhtar, M.
Ali, W. F. F. W.
Djuansjah, J. R. P.
Influence of silica content on the stabilization of tetragonal zirconia for biomedical applications
description Tetragonal phase of Zirconia (ZrO 2 ) attracts more attention when referring to the phase development compared to the monoclinic and cubic phase. Tetragonal phase offers many favorable features such as high chemical and wear resistance, high fracture toughness and hardness. However, tetragonal ZrO 2 is not stable at room temperature, make it having issues in cooling process. The difficulty to maintain tetragonal phase at room temperature was assisted by the reversible process of ZrO 2 . This reversible process that happened at tetragonal to monoclinic phase transition, caused the monoclinic phase alone are presented after cooling process. The transformation of tetragonal to monoclinic is accompanied by the increase in volume, in which can lead to the propagation of cracks. Thus, ZrO 2 ceramic became a brittle material instead of their high fracture toughness and hardness. Silica (SiO 2 ) was introduced as the dopant component to overcome this transformation-induced cracking when ZrO 2 was sintered above 800 °C. An attempt was made in this work to investigate the effect of calcination temperature and SiO 2 concentrations toward ZrO 2 stabilisation by using sol-gel method. The phase transformation of ZrO 2 and its morphology were characterized via X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). From the XRD analyses, it was determined that SiO 2 with 0.5 M concentration has played a crucial role in the stabilisation of tetragonal ZrO 2 . However, both monoclinic and cubic were found when the concentration of SiO 2 is lower than 0.5M.
format Conference or Workshop Item
author Mokhtar, M.
Ali, W. F. F. W.
Djuansjah, J. R. P.
author_facet Mokhtar, M.
Ali, W. F. F. W.
Djuansjah, J. R. P.
author_sort Mokhtar, M.
title Influence of silica content on the stabilization of tetragonal zirconia for biomedical applications
title_short Influence of silica content on the stabilization of tetragonal zirconia for biomedical applications
title_full Influence of silica content on the stabilization of tetragonal zirconia for biomedical applications
title_fullStr Influence of silica content on the stabilization of tetragonal zirconia for biomedical applications
title_full_unstemmed Influence of silica content on the stabilization of tetragonal zirconia for biomedical applications
title_sort influence of silica content on the stabilization of tetragonal zirconia for biomedical applications
publishDate 2019
url http://eprints.utm.my/id/eprint/88769/
https://dx.doi.org/10.1063/1.5089409
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