Application: it is used in low voltage switch devices such as temperature controller, protection switch, small current contactor, automatic switch, precision instrument, relay, etc. A kind of
Characteristics: good conductivity and thermal conductivity, low and stable contact resistance, small and uniform electric erosion, less planar material migration when applied under DC condition. The contact resistance of the material increases due to the formation of oxides during on-off, which is sensitive to sulfur and has poor resistance to fusion welding under high current. It is often paired with graphite. The performance of electrical contact can be improved by using powder sintering and extrusion technology. Adding a small amount of graphite to nickel can get a better composite
