(北京科技大學(xué)材料科學(xué)與工程學(xué)院， 北京 100083)
摘 要: 對(duì)超聲場輔助增強(qiáng)作用下的液相化學(xué)還原法制備納米級(jí)銅粉的工藝過程和條件進(jìn)行了研究。 研究表明： 在包覆劑存在的條件下， 硫酸銅溶液與不同還原劑相配合， 在超聲場作用下可制得粒徑小于100 nm的銅粉。 探討了超聲波場功率、 冷卻方式、 反應(yīng)時(shí)間、 pH值、 反應(yīng)溫度等對(duì)粒徑和反應(yīng)轉(zhuǎn)化率的影響。 通過參數(shù)調(diào)整可獲得最佳的制備工藝。
關(guān)鍵字: 納米銅粉； 超聲場； 化學(xué)還原法
MENG Hui-min,FAN Zi-shuan, LI Hui-qin
（ 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
