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Integrated Ferroelectrics
An International Journal
Volume 180, 2017 - Issue 1: Proceedings of the Fifteenth China International Nanoscience and Technology Symposium (CINSTS16), Part III
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Original Articles

Fabrication, characterization, and insulating property of Fe3O4 nanofluids

Yuzhen LvSchool of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, China;Beijing Key Laboratory of High Voltage and EMC, School of Electric and Electronic Engineering, North China Electric Power University, Beijing, ChinaCorrespondence[email protected] [email protected]
,
Kai YiSchool of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, China
,
Chao LiSchool of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, China
,
Qian SunSchool of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, China
,
Muhammad RafiqBeijing Key Laboratory of High Voltage and EMC, School of Electric and Electronic Engineering, North China Electric Power University, Beijing, China
,
Chengrong LiBeijing Key Laboratory of High Voltage and EMC, School of Electric and Electronic Engineering, North China Electric Power University, Beijing, China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China
&
Bo QiBeijing Key Laboratory of High Voltage and EMC, School of Electric and Electronic Engineering, North China Electric Power University, Beijing, China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing, China
 show all
Pages 37-43 | Received 18 Sep 2016, Accepted 07 Mar 2017, Published online: 29 Sep 2017
 
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ABSTRACT

Monodisperse Fe3O4 nanoparticles modified by oleic acid were synthesized by a solvothermal method and dispersed into mineral transformer oil to prepare Fe3O4 nanofluids. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis indicated that the obtained nanoparticles are single crystals with an average diameter of 15 nm. The test results indicate that the nanoparticles exhibited good dispersibility in the nanofluids at a wide range of concentrations. Moreover, the positive impulse breakdown strength of nanofluids was greatly improved by 36.6% at the optimum concentration of nanoparticles.

5. Funding

The authors would like to thank National Natural Science Foundation of China for supporting this research under Contract No. 51337003, 51472084, and 51477052, and the Fundamental Research Funds for the Central Universities (JB2015019).

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