摘要
采用液体中的固体颗粒热泳理论,对铅铋共晶合金(LBE)中金属纳米颗粒的热泳现象进行研究。计算LBE中不同种类纳米颗粒的热泳速度,并观察不锈钢纳米颗粒在不同流体中的热泳速度。对LBE中不同种类纳米颗粒热泳速度的计算结果表明,LBE中纳米颗粒的热泳速度随着温度梯度的增加而增加,随粒径的减小而增加;不锈钢颗粒的热泳速度要比碳纳米管颗粒低两个量级,与铜纳米颗粒的热泳速度相近。对不锈钢纳米颗粒在不同流体中热泳速度的计算结果表明,不锈钢颗粒在LBE中的热泳速度要比在水和四氟乙烷中低1个量级,比在机油和乙基乙二醇中高2个量级。
The thermophoresis theory of solid particles in liquid are selected to research thermophoresis phenomenon in liquid Lead-Bismuth Eutectic（LBE）.The thermophoretic velocity of different particles in LBE and stainless steel particles in different fluid are calculated.The results showed that,thermophoretic velocity of particles in LBE increase with the increase of temperature gradient and the decrease of particle radius.And the velocity of stainless steel particles two orders of magnitude lower than the Carbon Nanotubes（CNT）,at the same time,similar to copper in LBE.What＇s more,the thermophoretic velocity of stainless steel particles in LBE would one order of magnitude lower than that in water and R134 a.Of course,it is still faster than that in Engine Oil and Ethyl Glycol two orders of magnitude.
出处
《核科学与工程》
CSCD
北大核心
2017年第3期393-398,共6页
Nuclear Science and Engineering
基金
国家自然科学基金(2009A024)
高等学校博士学科点专硕科研基金(2014BJ0086)的资助
关键词
铅铋共晶合金
热泳
纳米颗粒
液态金属
Lead-Bismuth Eutectic
Thermophoretic
Nanoparticles
Liquid metal
