高能球磨固态扩散反应研究

Diffusion reaction during high-energy ball milling

从扩散理论出发 ,结合Al-Cu合金高能球磨实验结果 ,分析了高能球磨过程中的扩散特点 ,提出了固态合成反应模型并进行了分析计算 .结果表明 ,高能球磨过程中固态反应能否发生取决于体系在球磨过程中能量升高程度 ,而反应完成与否则受体系中的扩散过程控制 ,即受制于晶粒细化程度和粉末碰撞温度 .

Discusses the diffusion characteristic model based on the experiment results of Al-Cu alloy during high energy ball milling, and concludes the occurrence of the reaction depends on the magnitude of energy increase during ball milling, and the completion of reaction is controlled by the crystalline refine and the compacting temperature of powder during ball milling.