NOUFERROUS METALLURGICAL EQUIPMENT

This article uses a high vacuum induction furnace to prepare Ag-4Cu-0.5Ni alloy with elements such as Sc, Zn, B, etc. The anti vulcanization performance of the alloy was analyzed using static immersion testing, dynamic potential scanning, and other characterization methods. The research results indicate that the addition of Sc, Zn, B and other elements can significantly improve the sulfurization resistance of Ag-4Cu-0.5Ni alloy in H2S atmosphere and Na2S solution; The addition of alloying elements not only significantly reduces the self corrosion current and corrosion rate of alloy materials, but also significantly improves their sulfurization resistance. The improvement of material properties is related to factors such as the reduction of alloy micro shrinkage, the preferential reaction between Zn and S, and the formation of passivation film (Sc).