球磨氧化铝晶粒尺寸与显微应变的关系

Correlation Between Microstrain and Crystallite Size in Alumina

研究了高能球磨氧化铝的晶粒尺寸和显微应变发现球磨后氧化铝的显微应变（ε） 与晶粒尺寸（ Ｄ） 符合逆变关系， 即晶粒尺寸越小， 显微应变越大显微应变与晶粒尺寸的倒数成线性关系， 在ε～１ Ｄ 图上出现双斜率表明球磨不同阶段，

The evolution of microstrain and crystallite size in Al 2O 3 subjected to high energy ball milling was studied by X ray diffraction analysis As expected, the ball milling produced a noticeable increase in microstrain and a decrease of the original crystallite size A mathematical linear correlation between microstrain and the reciprocal of crystallite size was obtained, and double n phenomenon was observed in the ε～1/D relationship The mechanism of microstrain increase for different milling period, which could be reflected from variation of the slope in the ε～1/D relationship, was suggested