微米银粉的正交实验法制备与表征

发布时间：2018-04-13 11:57

本文选题：金属材料 + 微米银粉　；参考：《贵金属》2017年02期

【摘要】：研究了以抗坏血酸为还原剂的液相还原法制备球形微米银粉时的主要因素对振实密度和形貌的影响。实验表明,酸性条件下制备的微米银粉分散性较好。正交实验表明,对银粉振实密度的影响大小的因素依次为底液pH、硝酸银浓度、分散剂PVP用量和实验温度。经过对银粉进行粒度、SEM和XRD等测定表征发现,优化条件下可制备得到振实密度为4.2 g/cm~3,平均粒径2.5μm,分散性良好的类球形银粉。
[Abstract]:The effect of main factors on the density and morphology of spherical micron silver powder prepared by liquid phase reduction with ascorbic acid as reducing agent was studied.The experimental results show that the micron silver powder prepared under acidic conditions has good dispersion.The orthogonal experiment showed that the factors influencing the density of silver powder were pH of substrate, concentration of silver nitrate, amount of dispersant PVP and experimental temperature.The particle size of silver powder was measured by SEM and XRD. It was found that the spherical silver powder with a vibrational density of 4.2 g / cm ~ (3), average particle size of 2.5 渭 m and good dispersion could be prepared under the optimized conditions.
【作者单位】：东北大学材料学院;西北有色金属研究院;
【分类号】：TB383.3;TG146.32

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