The purpose of our experiments was to develop a new copper-graphite composite material with application to sliding electrical contacts for urban transport. This material was prepared by powder metallurgy technique, from composite copper-coated graphite powder peliculized with an organic binder. The metal-coated powder was obtained by chemical single layer plating. After sintering, the material was characterized from physico-mechanical (density, hardness, mechanical strength, and resistivity) and structural point of view and compared with copper-graphite materials obtained by conventional mixing of copper and graphite powders.


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