[烧结温度对牙科氧化锆增韧陶瓷物理和力学性能的影响]
[The effect of sintering temperature on the physical and mechanical properties of dental zirconia toughened ceramic].
作者信息
Zhang Bin, Chen Ji-hua, Sun Lian-jun
机构信息
Department of Stomatology, The General Hospital of Shenyang Military Command, Shenyang 110015, China.
出版信息
Zhonghua Kou Qiang Yi Xue Za Zhi. 2003 Jul;38(4):304-5.
OBJECTIVE
To investigate the effects of sintering temperature on the physical and mechanical properties of dental zirconia toughened ceramic (ZTC).
METHODS
3 mol% yttria-stabilized zirconia compacts were prepared by dry press method and then sintered at 1,490 degrees C, 1,530 degrees C, 1,570 degrees C and 1,610 degrees C respectively. The physical properties and bending strength were then measured.
RESULTS
The result of the study indicated along with the rise of sintering temperature density and shrinkage of ZTC increased, but the pore structure decreased. It also showed the peak of bending strength was in 1,570 degrees C.
CONCLUSIONS
In terms of sintering temperature and bending strength among the selected temperature, the best sintering temperature of 3 mol% yttria-stabilized zirconia should be about 1,570 degrees C.
目的
研究烧结温度对牙科氧化锆增韧陶瓷（ZTC）物理和力学性能的影响。
方法
采用干压法制备3 mol%氧化钇稳定氧化锆坯体，然后分别在1490℃、1530℃、1570℃和1610℃下烧结。随后测量其物理性能和弯曲强度。
结果
研究结果表明，随着烧结温度的升高，ZTC的密度和收缩率增加，但孔隙结构减少。还表明弯曲强度的峰值出现在1570℃。
结论
就所选温度范围内的烧结温度和弯曲强度而言，3 mol%氧化钇稳定氧化锆的最佳烧结温度应为约1570℃。
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