| 超声波强化制备超细银粉 |
| |
| 引用本文： | 宋永辉,兰新哲,张秋利. 超声波强化制备超细银粉[J]. 稀有金属, 2005, 29(4): 502-504 |
| |
| 作者姓名： | 宋永辉 兰新哲 张秋利 |
| |
| 作者单位： | 西安建筑科技大学贵金属工程研究所,陕西,西安,710055 |
| |
| 基金项目： | 陕西省教育厅专项科研计划资助项目(05JK242) |
| |
| 摘 要： | 研究以PVPk30为分散剂,用水合肼作还原剂,在高浓度的硝酸银溶液中,通过液相还原保护法制取平均粒径为150nm的超细银粉。对影响银粉粒度的主要因素:还原剂浓度、分散剂浓度及溶液中银离子浓度等进行了实验研究。重点探讨了超声波在制取超细银粉过程中的作用和影响。结果表明:超声波空化作用及产生的微射流可强化还原过程,且起到粉碎和分散的作用,使银粉粒径减小,粒度分布均匀。
|
| 关 键 词： | 液相还原 纳米银 超声波 |
| 文章编号： | 0258-7076(2005)04-0502-03 |
| 修稿时间： | 2005-05-11 |
Preparation of Superfine Silver Powder by Ultrasonic Wave Intensification |
| |
| Song Yonghui,Lan Xinzhe,Zhang Qiuli. Preparation of Superfine Silver Powder by Ultrasonic Wave Intensification[J]. Chinese Journal of Rare Metals, 2005, 29(4): 502-504 |
| |
| Authors: | Song Yonghui Lan Xinzhe Zhang Qiuli |
| |
| Affiliation: | Song Yonghui*,Lan Xinzhe,Zhang Qiuli |
| |
| Abstract: | Superfine silver powder was prepared by liquidreduction protection method,using PVPk30 as dispersant a-gent ,and hydrazine hydrate as reducingagent inthe higherconcentrated solutionof silver nitrate .The average graindi-ameter of superfine silver powder is 150 nm.The experi-ments involve the influence of the concentration of reducingagent ,dispersant agent andsilverions .The function of ul-trasonic wave was investigated emphatically in preparationprocess .The results showthat cavitationand microjet of ul-trasonic wave can accelerate the reducing process .The ul-trasonic wave make the particle size small and eventhroughits dispersive action. |
| |
| Keywords: | liquid reduction nano-silver ultrasonic wave |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
