Properties of Cold Spray Coatings for Restoration of Worn-Out Contact Wires

The influence of Cu-Al2O3-Zn powder mixtures for cold spraying on the properties coatings is studied. were deposited to restore worn-out copper contact wires, which used as a substrate. main parameters, such adhesion, specific electrical conductivity, hardness, and wear resistance, examined. content Al2O3 in mixture varied from 30% 60%, Zn, 0% 20%. results obtained indicate that 60Cu-40Al2O3 coating was most adhesive showed best while 40% Cu-50% Al2O3-10% Zn found be wear-resistant. optimum temperature 500 °C.