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超细铜粉是指粒径介于10-9～10-5m的微小铜粒子,它具有导电导热性能好、粒径小、耐腐蚀、表面光洁、流动性强等特点,在力学、电学、化学和电极材料的制造等领域有许多特异性能和极大的潜在应用价值。在室温下探讨了电流密度、溶液浓度、超声频率以及时间对超细铜粉粒度分布的影响规律,采用扫描电镜对超细铜粉做了物相分析。结果表明:随着电流密度和超声频率的增大,超细铜粉的粒度变小;超声时间对超细铜粉粒度影响不大;但随着电解溶液浓度的增大,超细铜粉的最终粒度也变大,不利于超细铜粉生成。
Ultrafine copper powder refers to the small particle size of copper particles between 10-9 ~ 10-5m, it has the characteristics of good electrical and thermal conductivity, small particle size, corrosion resistance, smooth surface, strong fluidity, etc. In mechanical, electrical, There are many specific properties and great potential applications in the fields of chemical and electrode material manufacturing. The effects of current density, solution concentration, ultrasonic frequency and time on the particle size distribution of ultrafine copper powder were discussed at room temperature. The phase analysis of ultrafine copper powder was carried out by scanning electron microscopy. The results show that with the increase of current density and ultrasonic frequency, the particle size of the ultrafine copper powder becomes smaller; the ultrasonic time has little effect on the particle size of the ultrafine copper powder; however, with the increase of the concentration of the electrolytic solution, The final particle size also becomes larger, is not conducive to the formation of ultrafine copper powder.