摘要
采用自制的ＺｒＯ２（３Ｙ—ＴＺＰ，７．６ｎｍ）纳米粉，分别按９，１２，１５，１８ｍｏｌ％弥散增强氧化铝陶瓷。对试样测试了抗弯强度及断裂韧性的变化规律，结果表明，抗弯强度在１５ｍｏｌ％ＺｒＯ２出现极值，而断裂韧性则趋于饱和，这一现象是由纳米晶粒ｔ→ｍ相变过程中的量子效应引起的。
The bending strength and the fracture toughness were studied by test in a series of dispersive strengthening Al2O3 ceramics containing 9, 12, 15 and 18 mol% ZrO2(3Y, 7. 6 nm) respectively. It is shown that both the bending strength and the fracture toughness reach a peak value corresponding to 15 mol% ZrO2 at room temperature. It is considered to be a result of quantum effect during t→m transformation of nanometer sized grains.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
1996年第1期105-108,共4页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家自然科学基金
关键词
氧化铝陶瓷
纳米氧化锆
力学性能
nanometer sized zirconia, dispersive strengthening alumina, quantnm zize effect, mechanical properties
