| Autor: |
Ragurajan, D., Satgunam, M., Golieskardi, M., Ariffin, A. K., Ghazali, M. J. |
| Předmět: |
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| Zdroj: |
Journal of the Australian Ceramic Society; 2016, Vol. 52 Issue 2, p128-133, 6p |
| Abstrakt: |
The influence of small additions of Al2O3 and MnO2 (up to 1 wt%) on the sintering behaviour of yttria-stabilized zirconia sintered over the temperature range from 1250°C to 1550°C was investigated. It was found that the mechanical properties of Y-TZP were dependent on the dopant amount and sintering temperature. The study revealed that 1450°C was the optimum sintering temperature for all Y-TZPs to achieve > 98% of theoretical density. Fracture toughness increased as the dopant content increased, which indicated that the annihilation of oxygen vacancies in Y-TZP was responsible for the instability of the t-ZrO2 lattice. The results also revealed that there was no significant influence of the Al2O3 and MnO2 doping on the sintered density of the Y-TZP. The relation between the measured mechanical properties is discussed with the emphasis on the role of the Al2O3 and MnO2 dopant. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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