FIELD: transport engineering. SUBSTANCE: current-collector material is composed of powders of iron, copper, graphite, zinc and phosphorus in the following quantities (mas/per cent): phosphorus 0,48-1,2; iron 9,6-12,0; zinc 2,4-16,0; graphite 10,5-25,0; copper is the rest. In this case 10-21 mas/per cent of graphite and 9,0-15,0 mas/per cent of copper are in 0,4-20, mm granules. Thanks to given composition material has enhanced durability without impairing its operational performance. EFFECT: improved quality.
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