Correlation Between Microstrain and Crystallite Size in Alumina

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 e～1/D relationship The mechanism of microstrain increase for different milling period, which could be reflected from variation of the slope in the e～1/D relationship, was suggested