摘要
报道了一种用激光光热效应直接测量纳米材料热扩散率的方法.并给出了在不同的成形压力和不同的烧结温度下的实验结果.结果表明,纳米ZrO_2的热扩散率随成形压力的增加而减少;纳米Al_2O_3的热扩散率在较高的烧结温度下.随烧结温度的升高而减少.而在较低的烧结温度时则出现了异常.
A method of using the photothermal effect in the direct measurement of diffusivity of nanometer materials is reported. Experimental results at different shape pressures and sintering temperatures are given. The results indicate that the diffusivity of nanometer ZrO2 increases with the shape pressure decreasing, while for nanometer A12O3, at higher sintering temperature, the diffusivity decreases with the sintering temperature elevating, and at lower sintering temperature the diffusivity unusually rises.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1997年第11期981-984,共4页
Chinese Journal of Lasers
