Thermal Conductivity Analysis of Ethylene Glycol/H₂O- Based MgFe₂O₄ Ferrofluid

Abstract:

The current investigation aims to synthesize MgFe₂O₄ magnetic nanoparticle and measure the thermal conductivity of MgFe₂O₄ ferrofluid. Prepared MgFe₂O₄ nanoparticle's structural characterization, the concentration of constituents, and surface morphology were analyzed using XRD, EDAX, and TEM respectively. This study also analyses the influence of magnetic flux on the thermal conductivity of MgFe₂O₄/ EG: H₂O (60:40) based ferrofluids formed by the two-step method. Thermal conductivity of ferrofluid measured at different volume fractions (ranging from 0.01% to 0.20%) show that thermal conductivity augmented with an escalation in volume fraction and the highest enhancement of 10.32% was reached at 0.20% volume fraction. Results indicate that the applied magnetic flux improves the thermal conductivity of ferrofluid from 10.32% to 14.75% at 0.20% volume fraction and 350 Gauss Magnetic flux.

• Periodical: Materials Science Forum (Volume 1048)
• Pages: 83-88
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1048.83
• Online since: January 2022
• Authors: K. Ajith*, Archana Sumohan Pillai, I.V. Muthu Vijayan Enoch, A. Brusly Solomon
• Keywords: Ferrofluid, Magnesium Ferrite, Magnetic Flux, Nanoparticles, Thermal Conductivity

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