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| 粒径可控高振实密度球银的制备工艺研究 | |
| 引用本文： | 李明利,余 琼,周宇松,钱坤明,周春江,杜丕一. 粒径可控高振实密度球银的制备工艺研究[J]. 稀有金属材料与工程, 2011, 40(8): 1492-1495 |
| 作者姓名： | 李明利 余 琼 周宇松 钱坤明 周春江 杜丕一 |
| 作者单位： | 1. 浙江大学硅材料国家重点实验室,浙江杭州310027;中国兵器科学研究院宁波分院,浙江宁波315103 2. 中国兵器科学研究院宁波分院,浙江宁波,315103 3. 浙江大学硅材料国家重点实验室,浙江杭州,310027 |
| 基金项目： | 国家46批博士后基金（20090461406）；宁波市自然科学基金（2009A610040） |
| 摘 要： | 以硝酸银为原料，对苯二酚(C6H4(OH)2)为还原剂，链烷醇胺A为分散剂，用液相化学还原法制备高振实密度超细银粉。用激光粒度分布仪测试银粉的粒度分布与平均粒径，用扫描电子显微镜(SEM)和透射电子显微镜(TEM)分析银粉的形貌、粒径和团聚状态，用多晶X射线衍射(XRD)仪检测粉体的晶相。结果表明：通过调节硝酸银的浓度、硝酸银与还原剂的配比以及分散剂的用量等，可以实现对所制备球银粒径的控制；制备的超细银粉为面心立方晶体结构，呈规则球形，振实密度可达4.0 g/cm3。 |
| 关 键 词： | 银；超细粉体；化学还原；振实密度 |
| 收稿时间： | 2010-08-28 |
Study on Preparation of Size-Controllable Spherical Ag Powders with High Tap Density |
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| Li Mingli,Yu Qiong,Zhou Yusong,Qian Kunming,Zhou Chunjiang and Du Piyi. Study on Preparation of Size-Controllable Spherical Ag Powders with High Tap Density[J]. Rare Metal Materials and Engineering, 2011, 40(8): 1492-1495 | |
| Authors: | Li Mingli Yu Qiong Zhou Yusong Qian Kunming Zhou Chunjiang Du Piyi |
| Affiliation: | State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China;Ningbo Branch of China Academy of Ordnance Science, Ningbo 315103, China;Ningbo Branch of China Academy of Ordnance Science, Ningbo 315103, China;Ningbo Branch of China Academy of Ordnance Science, Ningbo 315103, China;Ningbo Branch of China Academy of Ordnance Science, Ningbo 315103, China;State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China |
| Abstract: | The ultrafine Ag powders with relatively high tap density were prepared by a chemical reduction method using AgNO3 as raw material. Hydroquinone and chain triacontanol amine were chosen as reductant and dispersant agent, respectively. The laser fineness gage was used to investigate the grain size distribution and the average diameter of Ag powders. The morphology, grain size and agglomerating state of Ag powders was examined by SEM and TEM. The phase composition of Ag powders was characterized by XRD. The results show that the grain size of Ag powders can be controlled by adjusting the concentration of AgNO3, the ratio of AgNO3 to reductant and dispersant agent dosage. The Ag powder obtained is of face-centered cubic crystal structure with quasi-orbicular morphology. The average tap density of the silver powders is up to 4.0 g/cm3. |
| Keywords: | silver ultrafine powder chemical reduction tap density |
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