Silver-based alloys containing cadmium oxide, silver and cadmium oxide are not mutually soluble. There are AgCdO5, AgCdO8, AgCdO10 and AgCdO15, etc. It has high conductivity, good resistance to electrical wear and welding, low and stable contact resistance, and arc extinguishing. It can be manufactured by or by oxidation-powder metallurgy, and can obtain alloys with microstructure and uniform distribution of cadmium oxide. It is used as a medium and high power electrical contact material, used for magnetic starters, high power relays, ignition switch contacts of electric welding machines, and aviation electrical contacts. But cadmium is a heavy metal,