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- Title
Enhanced conductivity of magnetorheological fluids based on silver coated carbonyl particles.
- Authors
Huang, Yuehua; Jiang, Yuhuan; Yang, Xiongbo; Sun, Hongyu; Piao, Hongguang; Xu, Ruizhen
- Abstract
Magnetorheological fluid (MRF) are mostly characterized by a remarkable change in their rheological behavior. However, the poor conductivity limit their potential electrical applications. To enhance the electrical properties of MRF, MRF based on silver-coated carbonyl iron (CI) micro-particles dispersed in silicon oil with oleic acid and addictives are prepared. The electrical properties of MRF were remarkably improved due to the inherent outstanding electrical conductivity of silver. The saturation resistance of the modified MRF was about three order magnitude reduced from 7.7 to 14 KΩ. Moreover, the magnetic response speed was around 7 times faster than that of the un-modified materials. Coating good conductivity material on CI particles offers a more practical new mean to improve the electrical characteristics of MRF.
- Subjects
MAGNETORHEOLOGICAL fluids; SILVER analysis; CARBONYL compounds analysis; OLEIC acid; ELECTRIC conductivity; FERROMAGNETIC materials; MAGNETIC fields; MAGNETIC particles
- Publication
Journal of Materials Science: Materials in Electronics, 2016, Vol 27, Issue 1, p255
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-015-3748-y