华南理工大学学报(自然科学版) ›› 2014, Vol. 42 ›› Issue (10): 57-62.doi: 10.3969/j.issn.1000-565X.2014.10.010

• 材料科学与技术 • 上一篇    下一篇

磁场作用下的磁流变液导电性和导热性

贾润泽 王义春 周飞   

  1. 北京理工大学 机械与车辆学院,北京100081
  • 收稿日期:2014-01-27 修回日期:2014-06-23 出版日期:2014-10-25 发布日期:2014-10-01
  • 通信作者: 王义春(1963-),男,副教授,博士生导师,从事动力工程辅助系统研究. E-mail:guofangxiongdi@163.com
  • 作者简介:贾润泽(1986-),男,在职博士生,从事动力工程辅助系统研究.E-mail:309355205@qq.com
  • 基金资助:

    广东省产学研资助项目(00434311220218085)

Electrical and Thermal Conductivities of Magneto-Rheological Fluids in Magnetic Field

Jia Run-ze  Wang Yi-chun  Zhou Fei   

  1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Received:2014-01-27 Revised:2014-06-23 Online:2014-10-25 Published:2014-10-01
  • Contact: 王义春(1963-),男,副教授,博士生导师,从事动力工程辅助系统研究. E-mail:guofangxiongdi@163.com
  • About author:贾润泽(1986-),男,在职博士生,从事动力工程辅助系统研究.E-mail:309355205@qq.com
  • Supported by:

    广东省产学研资助项目(00434311220218085)

摘要: 通过自制的实验装置,对制备的两种不同的铁钴镍磁流变液进行了实验研究,分析了其在不同磁场强度下的导电、导热规律,并与铁钴镍磁粉本身的导电性和导热性进行了对比。结果表明:在磁场作用下,铁钴镍磁流变液和铁钴镍磁粉的导电性和导热性均发生明显的变化;在磁场强度在0~0.92T内增大时,铁钴镍磁粉的电阻会有两到三个数量级的下降,其导热系数从4W/(m•K)增加到13.2W/(m•K),导热性显著提高,两种磁流变液的导热系数也均有提高。

关键词: 磁流变液, 磁场, 导热性, 导电性

Abstract:

An experiment on two prepared Fe-Co-Ni MRFs (Magneto Rheological Fluids) was conducted through a homemade device. Then, the electrical and thermal conductivities of the two MRFs wereare analyzed and compared with those of the Fe-Co-Ni magnetic powder itself. The results show that the magnetic field causes the electrical and thermal conductivities of the Fe-Co-Ni MRFs and magnetic powder to change greatly, and that, when the magnetic field intensity increases within 0~0.92T, the resistance of the Fe-Co-Ni magnetic powder decreases by two-to-three orders of magnitude with a significant increase in thermal conductivity increase which is from 4W/(m2•K) to 13.2W/(m2•K), and the thermal conductivities of the two MRFs also increase.

Key words: magneto rheological fluid, magnetic fields, electrical conductivity, thermal conductivity

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