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Enhanced conductivity of magnetorheological fluids based on silver coated carbonyl particles

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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.

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Acknowledgments

This work is financially supported by the Three Gorges University Master’s Degree Thesis pew Fund (2015PY033), the financial of National Science Foundation of China (Grant No. 51177088). Key scientific research project of hubei provincial department of education of China (No. D20151205) and guiding scientific research project of hubei provincial department of education of China (No. B2015246).

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Authors and Affiliations

  1. College of Electrical Engineering and New Energy, China Three Gorges University, Yichang, People’s Republic of China

    Yuehua Huang & Yuhuan Jiang

  2. College of Science, China Three Gorges University, Yichang, People’s Republic of China

    Xiongbo Yang, Hongguang Piao & Ruizhen Xu

  3. Beijing National Center for Electron Microscopy, School of Materials Science and Engineering, The State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials (MOE), Tsinghua University, Beijing, 100084, People’s Republic of China

    Hongyu Sun

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  1. Yuehua Huang
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  2. Yuhuan Jiang
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  3. Xiongbo Yang
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  4. Hongyu Sun
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  5. Hongguang Piao
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  6. Ruizhen Xu
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Correspondence to Xiongbo Yang.

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Huang, Y., Jiang, Y., Yang, X. et al. Enhanced conductivity of magnetorheological fluids based on silver coated carbonyl particles. J Mater Sci: Mater Electron 27, 255–259 (2016). https://doi.org/10.1007/s10854-015-3748-y

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  • DOI: https://doi.org/10.1007/s10854-015-3748-y

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