Abstract
The electrical contact resistance and the electric-erosion wear resistance of the composite material consisting of a copper matrix reinforced by superelastic hard carbon are studied. The reinforcing of CM by carbon particles, which have a unique combination of mechanical properties (high microhardness of 30–35 GPa, elastic modulus of 180–200 GPa, and a high ratio of microhardness to elastic modulus (HV 50 /E > 0.15)), ensures good contact characteristics of the material. The minimum electrical contact resistance of CM is comparable with the electrical contact resistance of a reference sample made of gold. The electric-erosion wear resistance of the CM is more than threefold that of chrome bronze, which is a widely used for high-current electrical contacts.
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Original Russian Text © V.V. Izmailov, E.I. Drozdova, O.P. Chernogorova, I.N. Potapova, M.V. Novoselova, E.A. Ekimov, 2015, published in Metally, 2015, No. 3, pp. 45–50.
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Izmailov, V.V., Drozdova, E.I., Chernogorova, O.P. et al. Electrical-contact properties of a composite material with a copper matrix reinforced by superelastic hard carbon. Russ. Metall. 2015, 376–380 (2015). https://doi.org/10.1134/S0036029515050092
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DOI: https://doi.org/10.1134/S0036029515050092