详细信息

明胶保护溶液还原法制备超细镍粉  ( EI收录)  

Preparation of Ultrafine Nickel Powder by Chemical Reduction Under the Protection of Gelatin in Aqueous Solution

文献类型:期刊文献

中文题名:明胶保护溶液还原法制备超细镍粉

英文题名:Preparation of Ultrafine Nickel Powder by Chemical Reduction Under the Protection of Gelatin in Aqueous Solution

作者:沈勇[1,2];张宗涛[1,2];赵斌[1,2];胡黎明[1,2];朱裕贞[1,2]

机构:[1]华东理工大学国家超细粉末工程研究中心;[2]华东理工大学化学系

年份:1997

卷号:23

期号:4

起止页码:452

中文期刊名:华东理工大学学报(自然科学版)

外文期刊名:Journal of East China University of Science and Technology

收录:CSTPCD;;EI(收录号:1997113942082);Scopus;北大核心:【北大核心1996】;CSCD:【CSCD2011_2012】;

基金:国家教委优秀青年教师基金

语种:中文

中文关键词:镍;超细粉末;制备;明胶;还原法;保护剂

外文关键词:Nickel;ultrafine powder;preparation;protection.

摘要:以明胶为高分子保护剂,水合肼为还原剂,在水溶液中制备了粒径为0.1~0.5μm、分散良好的类球形超细镍粉。研究了明胶保护条件下水合肼用量、碳酸钠浓度、反应时间、明胶浓度、硝酸银加入量对镍粉的产率、形态及反应诱导期的影响。X射线衍射及X射线荧光光谱分析表明,所合成的超细镍粉为单一晶相,纯度超过98%。热重分析显示超细镍粉在空气中的氧化起始温度为300°C,终止温度为600°C。
The ultrafine nickel powder with mean particle size 0.1~0.5μm was prepared by chemical reduction under the protection of gelatin in aqueous solution.The main affective factors,such as reaction time,the concentration of hydrazine hydrate,gelatin,sodium carbonate and silver nitride,on the reduction inducing time,the yield and morphology of nickel powders,were studied.The nickel powders were analyzed by X ray diffraction(XRD),X ray phosphate spectroscopy,and thermogravimetry(TG),showing single crystalline phase,purity>98% and starting oxidation temperature at 300°C in air.

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