Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第17卷    第1期    总第94期    2007年1月

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文章编号:1004-0609(2007)01-0149-07
喷雾热分解法制备超细银粉及其形貌控制
刘志宏,刘智勇,李启厚,吴厚平,张多默

(中南大学 冶金科学与工程学院,长沙 410083)

摘 要: 采用超声雾化热分解装置,对喷雾热分解法制备超细银粉进行了系统研究。考察了炉子温度、硝酸银水溶液浓度、超声雾化装置功率、硝酸银溶液及载气流量等因素对产物粒子形貌、粒度分布的控制行为。研究结果证实,喷雾热分解制备微米级球形金属银粉技术具有广泛应用前景。

 

关键字: 金属银粉;硝酸银;喷雾热分解;超声雾化器

Morphology control of micro-sized spherical silver
powder prepared by spray pyrolysis
LIU Zhi-hong, LIU Zhi-yong, LI Qi-hou, WU Hou-ping, ZHANG Duo-mo

College of Metallurgical Science and Engineering, Central South University, Changsha 410083, China

Abstract:Micro-sized spherical silver powders were prepared by spray pyrolysis of aqueous solutions of AgNO3, using a spray pyrolysis apparatus with an ultrasonic atomizer. The effects of furnace set temperature, concentration of aqueous AgNO3 solutions, power of ultrasonic atomizer and flux of aqueous AgNO3 solution as well as carrier gas on the morphology and particle size distribution of silver powders, were investigated systematically. The results show that the technique of spray pyrolysis for preparing micro-sized spherical silver powders has the prospect of application.

 

Key words: silver powders; silver nitrate; spray pyrolysis; ultrasonic atomizer

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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