(北京科技大学材料科学与工程学院， 北京 100083)
摘 要: 对超声场辅助增强作用下的液相化学还原法制备纳米级铜粉的工艺过程和条件进行了研究。 研究表明： 在包覆剂存在的条件下， 硫酸铜溶液与不同还原剂相配合， 在超声场作用下可制得粒径小于100 nm的铜粉。 探讨了超声波场功率、 冷却方式、 反应时间、 pH值、 反应温度等对粒径和反应转化率的影响。 通过参数调整可获得最佳的制备工艺。
关键字: 纳米铜粉； 超声场； 化学还原法
（ School of Materials Science and Engineering,
University of Science and Technology Beijing,
Beijing 100083, China）
Abstract: The preparation of nano-copper powders by chemical reduction were studied under ultrasonic field in the solution. The results show that, under the condition of the existence of the encapsulations and ultrasonic field, by the selecting suitable composition of the CuSO4 solution and reducer, the copper powder with diameter of less than 100 nm. The ultrasonic power, cooling manner, reaction time, pH and reaction temperature have effect on the diameter and transform rate of copper powders.
Key words: nano-copper powders; ultrasonic field; chemical reduction
