... variable switching times. 4. AgNi /Cu bimetal rivet: In low voltage engineering, this contact is widely used in AC switches as ... an electrical contact.5. AgCdO/Cu bimetal rivet: This contact includes AgCdO10, AgCdO12, AgCdO15, and this ... important materials in silver - metal oxide contact material. 6. AgZnO rivet and AgZnO/Cu bimetal rivet: The oxide of this contactor ...