Electrical contacts are important components of high-voltage circuit breakers, switchgear, isolation switches, and grounding switches, and their performance directly affects the quality and service life of these high-voltage electrical appliances. In high voltage and ultra-high voltage SF6 circuit breaker systems, the arc contacts currently used are mainly made of CuW alloy. In the past, the moving arc contacts in the arc contacts were in a finger spring structure, which was complex and the spring worked under heat, resulting in poor reliability in use. As the core component of medium and high voltage switchgear, electrical contacts play a role in breaking and conducting, and are widely used in various high-voltage load switches, SF6 circuit breakers, on-load tap changers, as well as high breaking capacity isolation switches and grounding switches. Electrical contacts are mainly divided into rivet type electrical contacts, powder metallurgy contacts, sheet shaped contacts, etc. Rivet contacts are mainly used in various relays, contactors, small switches, temperature controllers, etc. Sheet shaped contacts are mainly used in contactors, circuit breakers, temperature controllers, intelligent switches, etc. Powder metallurgy contacts are mainly used in circuit breakers, line protection switches, fault current protection switches, leakage protection switches, sliding brushes, etc. The main materials used for contacts include Ag, FAg, AgNi, AgSnO2, AgCdO, etc