LIN feng1， 2 a，b ， LEI Xiaoxu1 ， WANG Jinbao2 a， b ，ZHANG Jianwei2 a，b ， JIANG Yanlin2 a，b ， QIN Haiqing2 a，b
（1. School of Material Science and Engineering， Guilin University of Electronic Technology， Guilin 541004； 2. a. National Engineering Research Center for Special Mineral Material ； b. Guangxi Key Laboratory of Superhard Material ， China Nonferrous Metal （Guilin） Geology and Mining Co. Ltd. ，Guilin 541004， China）
Abstract：To make tin nano-powders disperse well and steadilyin ethylene glycol aqueous solution,tin nano-powders with average particle size of 106 nm were prepared by direct current arc plasma evaporation method using fabricated apparatus.With sodium dodecyl sulfate,sodium hexametaphosphate,poly(ethylene glycol) as dispersants,dispersing performance of tin nano-powders in aqueous solution of ethylene glycol were researched.Effect of dispersing time,surface active agent type and content on the scattered performance of tin nano-powders was analyzed.The results show that all surfactants promote the dispersion stability of ultrafine powders.With the extending of ultrasonic time and the increase of dispersant concentration,the dispersion effect of tin nano-powders increases at first and then decreases.The best dispersion condition of ultrafine tin nano-powders in aqueous solution of ethylene glycol is confirmed as that adding into sodium dodecyl sulfate with mass fraction of 3% and the ultrasonic time is 60 min.
Keywords：direct current arc plasma;tin nano-powder;surfactant;dispersion stability
中图分类号：TGl46.1+ 4 文献标志码：A
文章编号：1008-5548（2013）02-0036-04
DOI ：10.3969/j.issn.1008-5548.2013.02.009
收稿日期：2012-10-15，修回日期：2012-11-02。
基金项目：广西科学研究与技术开发计划（科技攻关）项目，编号：桂科攻 11107003-8；广西科学研究与技术开发计划（科技创新能力建设）项目，编号：桂科能 1270010。
第一作者简介：林峰（1963—）， 男， 博士， 教授级高级工程师， 研究方向为纳米金属粉体的 制备及应用 。 电 话 : 0773-5636383， E-mail ：252609856@qq.com。
通信作者：雷晓旭（1987—），女，硕士研究生，研究方向为纳米金属粉体制备及应用。 电话： 0773-5636383， E-mail ：leixiaoxu2006@126.com。
