纳米晶材料由于其物理特性显著不同于常规粗晶材料而引起人们的极大兴趣和受到广泛重视。近年来,人们发现机械合金化是制备纳米晶的最有效方法之一,通过强烈的机械形变和破碎,可以容易地得到极细的晶粒。最近,一种结合机械合金化与化学浸出法的技术 Nanocrystalline materials are of great interest and widespread interest because of their significant differences in physical properties from conventional coarse-grained materials. In recent years, it has been found that mechanical alloying is one of the most effective methods for preparing nanocrystals. Very fine grains can be easily obtained by intensive mechanical deformation and crushing. Recently, a combination of mechanical alloying and chemical leaching techniques