纳米磁性液体表观粘度随磁场变化的实验研究  

Experimental study of nano-magnetic fluid apparent viscosity changing with magnetic field

作　　者：刘化君[1] 李艳琴[1] 陈有志[1] 杨正广[1] 云牧[1] 李学慧[1] 

机构地区：[1]大连大学物理科学与技术学院纳米磁性液体研发工作室,辽宁大连116622

出　　处：《天津工业大学学报》2006年第6期15-16,19,共3页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(50077002)

摘　　要：采用SNB-1数字粘度计和自制线圈等装置,通过改变粘度计转子的转速和线圈的励磁电流等方式,研究纳米磁性液体表观粘度随磁场变化的规律.实验发现,在相同磁场下,纳米磁性液体随转速和温度的增加,粘度值反而减小;在恒定温度或恒定转速时,随着磁感应强度的增加,粘度值增加.By using the SNB -1 digital viscosimeter and homemade coil, the regularity of nano-magnetic fluid apparent viscosity changing with the magnetic field is studied throuh changing the rotational speed of rotor of viscosimeter and the exciter current of coils. The experimental results show that in the same magnetic field the viscosity decreases with the increase of the rotor rotational speed and temterature, and in the constant temperature or constant rotational speed the viscosity increases with the increase of the magnetic field intensity.

关 键 词：磁性液体 粘度 磁场变化 转速 

分 类 号：TB42[一般工业技术]