Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (10): 57-62.doi: 10.3969/j.issn.1000-565X.2014.10.010

• Materials Science & Technology • Previous Articles     Next Articles

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)

PDF

427

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

CLC Number: