光诱导法制备纳米级片状银粉的研究  

The Photoinduced Method for Preparation of Ultrafine Flake Silver Powders

作　　者：周全法[1] 李锋[1] 朱雯[1] 

机构地区：[1]常州技术师范学院应用化学系,江苏常州213001

出　　处：《贵金属》2003年第1期35-38,共4页Precious Metals

基　　金：江苏省教育厅科研项目 (0 0KJB15 0 0 12 )

摘　　要：将银溶胶用适当的保护剂保护后 ,置于一定波长的可见光下进行辐照可以得到纳米级片状银粉。可见光的辐照时间以及波长和强度等对所得片状银粉的几何特征影响较大。整个光诱导过程可以分为诱导、生长和成熟 3个时间段。光诱导法是替代现行球磨法制备片状银粉的可选方法之一 。Large quantities of spheric silver colloidal particles,which were protected by poly vinyl pyrrolidone(PVP),can be converted into flake silver powders using photoinduced method.The irradiation time,the wavelength and intensity of visible irradiation light and many other factors have a great influence on the geometrical characteristics of flake silver powders.The whole photoinduced process can be divided into three stages of induction,growth and ripeness,according to the extinction characteristics of ultrafine flake silver powders.The photoinduced method is one of the candidated of substitute for the traditional ball milling method,which has an application prospect.

关 键 词：金属材料 片状银粉 光诱导 制备 

分 类 号：TF123.72[冶金工程—粉末冶金]