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.

中文翻译：

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还原氧化石墨烯对用于电触点的 Cu-Zr-La 合金性能的影响

研究了通过反复压制和烧结生产的RGO/Cu-Zr-La合金。研究了还原氧化石墨烯 (RGO)、Zr 和 La 组分对合金微观结构、机械性能、导电性和抗氧化性的影响。结果表明，RGO 和 Zr 在晶界上的沉淀阻碍了晶界的位移。RGO/Cu-Zr-La 合金的机械特性由于高载荷的重新分配和 Orowan 机制而增长。与纯Cu相比，RGO/Cu-Zr-La合金的显微硬度和断裂强度分别提高了51.4%和27.1%。合金的抗氧化性也增加。