【作者】 何礼君； 张少明； 朱学新； 徐骏； 石力开；

【Author】 HE Li-jun, ZHANG Shao-ming, ZHU Xue-xin, XU JUN, SHI Li-kai (National Engineering Research Center for Non-ferrous Metal Composites, General Research Institute for Non-ferrous Metals, Beijing 100088, China)

【机构】 北京有色金属研究总院复合材料中心；

【摘要】 介绍了均匀液滴喷射的基本原理、工艺特点以及产生均匀液滴喷射的基本条件。通过自制装置,在激振频率为4.79 kHz、喷嘴直径为180μm的条件下,高效制备出球形度好、粒度分布范围窄、表面光亮、微观组织均匀细小的Sn3.0Ag0.5Cu无铅精密焊球。制备出的精密焊球中心粒径为280μm,射流直径与制备焊球直径比与Rayleigh和Weber最佳波长下推导的理论值比较接近,并讨论了产生误差的原因。结果表明,均匀液滴喷射技术工艺简单,生产效率高,各个工艺参数可控性好,在均匀金属颗粒制备方面具有雾化和其他机械方法无法比拟的优越性,具有广阔的应用前景和推广价值。更多还原

【Abstract】 The principle and process characterizes of uniform droplet spray(UDS) were introduced. The basic conditions for the production of uniform droplet were studied. Solder sphere were produced successfully through UDS cooperated rapidly solidify technique by self developed equipment. The size distribution, oxygen content and micro-structure of particle were studied and compared with those of commercial solder sphere. Compared with mechanical process, UDS has advantages of simple process, high production effect and controlling process parameters easily than traditional atomized sprays. The results show that UDS technique has wide industrial applications.更多还原