LAUSR

RGO/Cu – Zr – La alloy produced by repeated pressing and sintering is studied. The effect of the reduced graphene oxide (RGO), Zr and La components on the microstructure, mechanical properties, conductivity, and oxidation resistance of the alloy is studied. It is shown that precipitation of RGO and Zr on grain boundaries hinders displacement of the grain boundaries. The mechanical characteristics of the RGO/Cu – Zr – La alloy grow as a result of redistribution of high loads and the Orowan mechanism. As compared to pure Cu, the microhardness and the rupture strength of alloy RGO/Cu – Zr – La increases by 51.4% and 27.1% respectively. The oxidation resistance of the alloy increases too. The main causes of these effects are the layer of lanthanum oxide surrounding the Cu particles and the barrier effect of the RGO lamellas between oxygen and the Cu matrix.