INFLUENCE OF ANTIMONY ON STRUCTURE AND MECHANICAL PROPERTIES OF PRE-EUTECTIC COPPER-PHOSPHORUS ALLOYS

摘要

The results of investigations of pre-eutectic alloys of Cu-P-Sb system are presented. The melting temperature range was determined using high-temperature differential thermal analysis. It was found that antimony alloying of copper-phosphorus pre-eutectic alloy provides a decrease in the solidus and liquidus temperature. On the basis of experimental and literature data, the surfaces of liquidus and solidus of ternary alloys were constructed. Using micro-X-ray spectral analysis, the chemical composition and a number of structural components of Cu-6.29P-1.97Sb alloy were determined. The influence of antimony on technological and mechanical properties, as well as morphology of cast ternary pre-eutectic copper-phosphorus alloys is shown.