| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 235741 | Powder Technology | 2015 | 5 Pages |
•Water based Fe3O4 nanofluids were prepared by chemical co-precipitation method.•The electrical conductivity of nanofluids was measured at various temperatures and volume fractions.•Results showed that the increase in electrical conductivity is a function of both volume fraction and temperature.•The results were compared with Shen's model.
In this study, magnetite, Fe3O4, nanoparticles were synthesized by chemical co-precipitation technique at different conditions. The products were characterized using X-ray diffraction, transmission electronic microscopy, and Fourier transform infrared spectroscopy. The electrical conductivity of nanofluids was nvestigated at different volume fractions and temperatures. Experimental measurements indicated considerable enhancement of electrical conductivity of Fe3O4 nanofluids with increase in both volume fraction and temperature under our experimental conditions. The results were compared with Shen's model, an electrical conductivity model previously developed for nanofluids. Survey results indicated that this model is largely able to explain the mechanism of Fe3O4 nanofluid electrical conductivity especially at low concentrations.
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