中文摘要：

一个新奇湿化学药品的方法在大量生产规模上为微尺寸、一致的球形的 Ag 粉末的准备被介绍。明确的粒子被混合铁(II ) 综合有银硝酸盐答案的硫酸盐七水混合物答案直接由高速度在房间温度激动人心。有不平的表面的很多微尺寸、一致的球形的粒子被获得，这被发现。铁(II ) 的集体比率到银硝酸盐的硫酸盐七水混合物极大地影响粒子的形状，并且当它是相对低的时，球形的粒子不能被获得。反应温度在粒子尺寸上有大影响。从 8 ～ 15 作为反应温度增加 ??????? 楌嘳′ ? 佐 ??????????? € ″ ????? 楤晦慲瑣浯瑥祲 ? 堠 ??? ???? 吗？？

英文摘要：

A novel wet-chemical method was presented for the preparation of the micro-sized and uniform spherical Ag powders on a mass-production scale. The well-defined panicles were synthesized by mixing the iron（Ⅱ） sulfate heptahydrate solution with silver nitrate solution directly by high-speed stirring at room temperature. It is found that a large number of micro-sized and uniform spherical particles with rough surfaces are obtained. The mass ratio ofiron（Ⅱ） sulfate heptahydrate to silver nitrate greatly affects the shape of particles, and when it is relatively low, spherical particles cannot be obtained. The reaction temperature has a great impact on the particle size. As the reaction temperature increases from 8 to 15℃, the mean diameter of particles decreases from 3.5 to 1.6 μm. The additive n-methyl-2-pyrrolidone improves the surface smoothness and compactness of the particles while the particle size is kept unchanged. Scanning electron microscopy, X-ray diffractometry and energy dispersive X-ray analysis were used to characterize the particle products.