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Title: | The influence of manganese oxide on the sintering behavior of yttria tetragonal Zirconia | Authors: | Meenaloshini, S. Amiriyan, M. Sankar, U. Tolouei, R. Ramesh, S. |
Issue Date: | 2010 | Abstract: | The sintering behavior of yttria-stabilized zirconia, with the influence of small additions of MnO2 (up to 1 wt %) sintered over the temperature range from 1250°C to 1500°C was investigated. It was found that the mechanical properties of Y-TZP were dependent on the dopant amount and sintering temperature. The results revealed that relative densities above 97.5% of theoretical (i.e. >5.95Mgm-3) could be obtained in Y-TZPs sintered at low temperatures, 1250°C and 1300°C, with the additions of ≤0.3wt%MnO2. In comparison to the undoped samples, the additions of up to 1 wt% MnO2 and for sintering up to 1350°C was found to be beneficial in enhancing the Vickers hardness of the ceramic. The fracture toughness of Y-TZP however, was found to increase only in the 1wt%MnO 2-doped samples when sintered above 1400°C. The relation between the measured mechanical properties is discussed with the emphasis on the role of the manganese oxide. © 2010 American Institute of Physics. | URI: | http://dspace.uniten.edu.my/jspui/handle/123456789/7586 |
Appears in Collections: | COE Scholarly Publication |
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