Investigation of Co and Ni adding effects on electrical properties of strain hardening in 85/15 bronze produced by T/M method

Powder metallurgy is one of the widely used methods in the manufacturing sector in recent years for the manufacture of difficult to manufacture parts. The hot pressing method has increased the production quality of the parts produced by the powder metallurgy method. Powder metallurgy has been used to produce very different metals with different melting grades. As an electrical contact material, copper (Cu) which has a very wide usage area and its alloys are produced by powder metallurgy. By adding high-melting metal particles into the copper matrix composites, the strength values of the composites to be produced are also increased. In this study, mechanical effects of these composites were investigated by adding cobalt and nickel to 85/15 Cu / Sn alloy at different ratios. Samples produced by powder metallurgy are sintered to hot pressing method at different temperature and pressure values. The samples were interpreted by comparing them with each other. In addition, the conductivity effects of the contact materials are measured by the effect of the consolidation created during the open-close operation and by the recrystallization due to the arc formed during the open-close. The density, microstructure, hardness and electrical conductivity values of the samples were measured. These measured values are compared with each other. It is seen that all the parameters used as a result of the studies made have an effect on the conductivity.