文献类型：期刊文献

英文题名：Preparation of Spherical Ultrafine Nickel Powder by Chemical Reduction Aqueous Solution

作者：Shen Yong[1];Zhang Zongtao[2];Zhao Bin[1];Zhu Yuzhen[1];Hu Liming[2]

机构：[1]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Natl Engn & Res Ctr Ultrafine Powder, Shanghai 200237, Peoples R China

年份：1996

卷号：12

期号：5

起止页码：460

外文期刊名：ACTA PHYSICO-CHIMICA SINICA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000207599800015)】；

语种：英文

外文关键词：Ultrafine nickel powder preparation; Chemical reduction

摘要：All kinds of spherical ultrafine nickel powders, varied in mean particle size (0.1-5,mu m),were prepared by chemical reduction in aqueous solution. The pH effect on the production of nickel powder and the main factors of their morphological control were studied. The nickel powder with purity 98,5% was obtained in the Na2CO3-NaHCO3 buffer system at pH 9.2-11. The surface rubbed stirring oar helped to the preparation of nickel particles. The mean particle size was decreased to submicron range by using AgNO3 as nucleating agent. PVP was efficient agent to regulate particle shape and reduce aggregation.