Electrochemical Behavior Study of Silver-rare Earth Multicomponent Alloy Low Pressure Contacts

Abstract

Traditional electrical contact materials are increasingly difficult to meet the loss requirements in low power transmission, and the problems of reduced durability and high energy consumption are gradually exposed. The rare earth-silver multi-alloy electrical contact mentioned in this article is a new contact material used in low-voltage environments, which has many advantages. The material is expected to replace existing Ag-CdO contacts, which can extend the service life of power equipment or components, reduce maintenance costs, and have certain economic value. After the rare earth and silver are alloyed, not only the mechanical properties, high temperature properties, corrosion resistance and electrical properties of the matrix are improved, but also the physical and chemical properties of the silver matrix can be maintained. In this paper, open-circuit chronopo-tentiometry curves under Ag82In9Ce alloy, Ag85In6Ce alloy, Ag86In3Zn3Ce alloy, Ag88Zn3In3 alloy, Ag88In3Zn3Ce alloy and Ag88InCe alloy system were tested at the same corrosion conditions, and combined with metallographic test-ing, the electrochemical corrosion behavior and properties of a variety of rare earth-silver alloys were analyzed, which laid a certain theoretical foundation for the further research of this work.