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Effect of sintering holding time on the properties and low-temperature degradation behaviour of manganese oxide-doped Y-TZP ceramic

The sintering of yttria-tetragonal zirconia polycrystals (Y-TZP) is commonly carried at a predefined temperature using a long holding time of 2 hours. This often has resulted in grain coarsening which affects the mechanical properties of the sintered body and low temperature degradation (LTD) behavi...

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Main Authors: Kwa S.M., Ramesh S., Bang L.T., Wong Y.H., Kelvin Chew W.J., Tan C.Y., Purbolaksono J., Misran H., Teng W.D.
Other Authors: 56800385200
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Published: Hanyang University 2023
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spelling my.uniten.dspace-225292023-05-29T14:01:41Z Effect of sintering holding time on the properties and low-temperature degradation behaviour of manganese oxide-doped Y-TZP ceramic Kwa S.M. Ramesh S. Bang L.T. Wong Y.H. Kelvin Chew W.J. Tan C.Y. Purbolaksono J. Misran H. Teng W.D. 56800385200 41061958200 36241434700 36605495300 55488782000 16029485400 8621252500 6506899840 36855788900 The sintering of yttria-tetragonal zirconia polycrystals (Y-TZP) is commonly carried at a predefined temperature using a long holding time of 2 hours. This often has resulted in grain coarsening which affects the mechanical properties of the sintered body and low temperature degradation (LTD) behaviour of the ceramic when exposed to moist environment. In this research, the effect of using a short holding time of 1 min. during sintering coupled with small amounts (0.5 and 1 wt%) of manganese oxide, MnO2 as dopant on the mechanical properties and LTD behaviour of 3 mol% Y-TZP were investigated. The results showed that the mechanical properties improved significantly with the addition of 0.5 wt% MnO2 for the 1-min. and 12-min. holding time samples when compared to 2 hours holding time sintered at the same temperature of 1350 oC. Nevertheless, regardless of the holding time employed, the 1 wt% MnO2 addition was not effective in improving the mechanical properties and ageing resistance of Y-TZP ceramic. � 2015, Hanyang University. All rights reserved. Final 2023-05-29T06:01:40Z 2023-05-29T06:01:40Z 2015 Article 2-s2.0-84940044549 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940044549&partnerID=40&md5=04c349fe650862a3a778ea5704884245 https://irepository.uniten.edu.my/handle/123456789/22529 16 2 193 198 Hanyang University Scopus
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description The sintering of yttria-tetragonal zirconia polycrystals (Y-TZP) is commonly carried at a predefined temperature using a long holding time of 2 hours. This often has resulted in grain coarsening which affects the mechanical properties of the sintered body and low temperature degradation (LTD) behaviour of the ceramic when exposed to moist environment. In this research, the effect of using a short holding time of 1 min. during sintering coupled with small amounts (0.5 and 1 wt%) of manganese oxide, MnO2 as dopant on the mechanical properties and LTD behaviour of 3 mol% Y-TZP were investigated. The results showed that the mechanical properties improved significantly with the addition of 0.5 wt% MnO2 for the 1-min. and 12-min. holding time samples when compared to 2 hours holding time sintered at the same temperature of 1350 oC. Nevertheless, regardless of the holding time employed, the 1 wt% MnO2 addition was not effective in improving the mechanical properties and ageing resistance of Y-TZP ceramic. � 2015, Hanyang University. All rights reserved.
author2 56800385200
author_facet 56800385200
Kwa S.M.
Ramesh S.
Bang L.T.
Wong Y.H.
Kelvin Chew W.J.
Tan C.Y.
Purbolaksono J.
Misran H.
Teng W.D.
format Article
author Kwa S.M.
Ramesh S.
Bang L.T.
Wong Y.H.
Kelvin Chew W.J.
Tan C.Y.
Purbolaksono J.
Misran H.
Teng W.D.
spellingShingle Kwa S.M.
Ramesh S.
Bang L.T.
Wong Y.H.
Kelvin Chew W.J.
Tan C.Y.
Purbolaksono J.
Misran H.
Teng W.D.
Effect of sintering holding time on the properties and low-temperature degradation behaviour of manganese oxide-doped Y-TZP ceramic
author_sort Kwa S.M.
title Effect of sintering holding time on the properties and low-temperature degradation behaviour of manganese oxide-doped Y-TZP ceramic
title_short Effect of sintering holding time on the properties and low-temperature degradation behaviour of manganese oxide-doped Y-TZP ceramic
title_full Effect of sintering holding time on the properties and low-temperature degradation behaviour of manganese oxide-doped Y-TZP ceramic
title_fullStr Effect of sintering holding time on the properties and low-temperature degradation behaviour of manganese oxide-doped Y-TZP ceramic
title_full_unstemmed Effect of sintering holding time on the properties and low-temperature degradation behaviour of manganese oxide-doped Y-TZP ceramic
title_sort effect of sintering holding time on the properties and low-temperature degradation behaviour of manganese oxide-doped y-tzp ceramic
publisher Hanyang University
publishDate 2023
_version_ 1806428098386722816
score 13.222552

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