Electrochemical behavior study of silver-rare earth multicomponent alloy low pressure contacts
银-稀土多元合金低压触头的电化学行为研究

摘要

传统的电触头材料越发难以满足低电量传输中的损耗要求，且耐用度降低、能耗高的问题也逐渐暴露。本文所提及的稀土-银多元合金电触头是一种应用于低电压环境中的新型触头材料，具有诸多优点。该材料有望替代现有的Ag-CdO触头，可延长电力设备或部件的使用寿命，降低维护成本，具有一定的经济价值。稀土与银制成合金后，不仅基体的力学性能、高温性能、耐腐蚀性能和电学性能得到改善，而且还能在很大程度上保持银基体的物理和化学性能。本文测试了相同腐蚀条件下，Ag82In9Ce合金、Ag85In6Ce合金、Ag86In3Zn3Ce合金、Ag88Zn3In3合金、Ag88In3Zn3Ce合金、Ag88InCe合金体系下的开路计时电位曲线，并结合金相测试分析，分析了多种稀土-银合金的电化学腐蚀行为及其性能，为此项工作进一步的研究奠定了一定理论基础。

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 chronopotentiometry 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 testing, 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.