摘要
使用高能球磨法液相分散铋粒,通过制备与修饰同步,制得高浓度的黑色胶体溶液,纳米粉体稳定均匀分散其中。本制备方法实现了粗细颗粒的分离,也首次成功解决了纳米铋粉的分散稳定性问题。取此溶液高速离心、真空干燥进行XRD分析,表明所制粉体为纯净的铋粉,并采用聚沉法解决了溶液中纳米粉体的收集问题。为了提高制备效率,采用正交实验进行参数优化,其优化方案为PVP与铋粒的质量比为1∶1,转速为350 r/m in,放入铋粒的质量为20 g,时间1 h。
Black ropy colloid liquor was made by high energy ball milling by dispersing with preparation and dispersion in-phase, well-proportioned Bi nanoparticles were dispersed tion was well done about Bi centrifugal machine, making tion. The use of precipitator was ying adopted Bi particles in liquid medium steadily. Steady decentralizananoparticles, here thin grains can be separated from thick ones. Dealing with this liquor by it dry in vacuum and carrying through XRD, pure Bi particles were prepared without oxidasuccessfully settled the collection of nanoparticles in liquor. Orthogonal experimental method to improve preparation efficiency, the optimized parameters are 1：1 as mass ratio of bismuth grains and modifreagent,350 r/min of rotate speed and 20 g bismuth grains with the time of 1 h.
出处
《润滑与密封》
EI
CAS
CSCD
北大核心
2006年第10期95-98,共4页
Lubrication Engineering
关键词
纳米铋粉
制备
高能球磨法
Bi nanoparticles
preparation
high energy ball milling
