(西安交通大学材料学院，西安710049)
摘 要: 通过对Si和CuO粉末进行高能球磨制备了Cu和SiO2的复合材料。表明了一般条件下难以进行的固l态还原反应，在高能球磨时可以发生；还原产物为纳米级的Cu和非晶的SiO2还原反应的进程有赖于高能球磨的条件；利用高能球磨可以直接制备纳米级氧化物-金属复合材料。
关键字: 高能球磨 固态还原反应 纳米复合材料
（School of Materials Sciece and Engineering,
Xi′an Jiaotong University, Xi′an 710049）
Abstract:A composite consisting of Cu and SiO2has been prepared with Si and CuO powders by using high-energy ball milling. The results indicated that the solid-state reduction reactions which may not be realized under usual conditions can be carried out through high-energy ball milling. The reduction products were nanometer order Cu and non-crystalline SiO2, depending upon a favourable high-energy ball milling condition. Therefore nanometer order oxide-metal composites can be prepared directly using high-energy ball milling technique.
Key words: high-energy ball milling solid-state reduction reaction nanometer composite
