研究了氧化铝在高能球磨过程中机械力化学效应的变化.机械力化学效应因子随球磨时间的变化可分为三个阶段:第一阶段主要是晶粒尺寸减小和显微应变增加同时进行;第二阶段主要是有效温度系数的增加;第三阶段主要是点阵膨胀至饱和.用溶解法比较了球磨前后氧化铝的活性,发现经球磨后,氧化铝在盐酸中的溶解活化能由18 kJ/mol降至4 kJ/mol,表面活化层增厚.
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