Abstract
In this work, electric arc synthesis was carried out by sputtering a graphite electrode with copper powder in a helium environment at a pressure of 12 Torr, resulting in the production of copper nanoparticles coated with carbon, with an average size of 6 nm. The synthesized material was characterized by transmission electron microscopy, Raman spectroscopy, and X-ray phase analysis. The effect of nanoparticle concentration on the electrical conductivity of water-based nanofluids was studied. It was found that when nanoparticles are added to water, the electrical conductivity of nanofluids increases, however at concentrations above 0.01 wt%, the electrical conductivity begins to decrease.
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