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AgCdO trimetal contact
Silver cadmium oxide contact materials made by sintering or extrusion process, silver cadmium oxide (AgCdO) in cadmium oxide (CdO) particles dispersed in silver matrix, the electrical contacts when the arc action, because the temperature increase, oxidative cadmium (CdO) show sub-Pyrolysis, evaporation Ershi electrical contact surface cooling, reducing the arc energy, which greatly improved the performance of electrical contacts of the interrupter, thus silver cadmium oxide (AgCdO) electrical contact material resistant to wear loss, anti-welding characteristics, and low and stable contact resistance. Increased oxidation of cadmium can increase the material resistance to weld, but will increase the contact resistance and temperature rise at the same time Reduce the material plasticity. Silver cadmium oxide contact material in high-current contactor in the electrical life of more than silver and silver-nickel alloy Ag AgNi has greatly improved and is widely used for low-voltage electrical appliances within the medium and high load electrical contact. Domestic AgCdO silver alloy oxide electrical contact material amount of the largest most widely used of a class; be large for medium and large-capacity relays, contactors, AC and DC switches and circuit breakers, etc. in a wide range of small capacity low-voltage electrical fields. EU countries in recent years because of environmental issues has been gradually disable the material is largely similar to the performance of silver tin oxide materials AgSnO alternative. The main products are AgCdO silver cadmium oxide alloy electrical contacts, AgCdO (10 ~ 15)/ Cu alloy of silver cadmium oxide / copper composite electrical contacts, silver cadmium oxide alloy / copper-nickel alloy-AgCdO (10 ~ 15) / CuNi (8 10) and other complex electrical contact.

Silver cadmium oxide contact of the mechanical and physical properties of materials
Type
AgCd015
AgCd015
AgCd015
Cdo %
10
12
15
Resistivity̦cm
2.1
2.2
2.5
Density g/cm3
10.1
10
9.9
Hardness HV-N/mm2
750
800
850
Tensile strength Mpa
270290
270300
280300
Stretching %
26
19
16

 
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