Abstract
In the present paper, the effect of La₂O₃ nanoparticle was studied on the physical and electrochemical properties of Cu/Cu-C contacts. The nanocomposite materials were prepared using different La₂O₃ contents (1.0–2.0 wt.%) processed by the spark plasma sintering method. The microstructural observations, density, hardness, electrical resistance measurements, and electrochemical behavior characterization were conducted. The results showed that the hardness, electrical resistance, and corrosion resistance of composites increase with the addition of La₂O₃ nanoparticle.

Key words
rare metal oxide, spark plasma sintering, Cu/Cu-C, contact materials, electrochemical behavior

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