Magnetite nanofluid as alternative for conventional insulating liquids

This attempt aims at scrutinizing the merit and potential of magnetite modified mineral oil as an alternative for conventional mineral oil. In order to enhance the properties of base fluids, incorporation of nano-sized particles in the matrix of the oil would be an innovative approach. This work primarily focuses on fabrication of stable magnetite doped nano-fluids (NFs) in different concentrations. The morphology and stability of the prepared samples are studied using transmission electron microscopy (TEM) and dynamic light scattering (DLS) in a former study. The electrical and rheological characteristics of NFs are investigated regarding the impact of the degree of enrichment. The breakdown voltage has shown a significant improvement by suspending the magnetite nano-powder. Moreover, the partial discharge behavior of the developed fluids is characterized under divergent ac electric field, which uncovers a minor increase of partial discharge inception voltage with addition of iron-oxide nano-additive. In addition, no variation in dynamic viscosity of those colloids could be detected.