Silver and tungsten are insoluble in both liquid and solid state. Preparation of silver tungsten alloy can only be made by sintering powder metallurgy material, can also be used extrusion method. Material is characterized by high hardness, anti-arc erosion, anti-adhesion and anti-welding ability. Made by powder metallurgy. More than 60% of the tungsten alloy used in many production methods. For low-voltage power switch, lifting switch, the locomotive switch, high current switch pre-contact, and heavy-duty relays, air circuit breakers. Cobalt addition can improve the wettability of silver on tungsten and reduce the contact resistance.
Different silver tungsten has different properties, such as AgW50 not only has good conductivity and good processing properties, but also has the characteristics of high melting point, high hardness, and good resistance to arc erosion, welding performance, low material transfer. The biggest feature of silver tungsten is its strong resistance to high current arc.
Silver tungsten material has good welding and corrosion resistance, it is widely used in industrial and domestic circuit breakers. Various types of silver-tungsten provide higher silver with higher electrical conductivity, and higher tungsten makes it more aggressive and solderable. It is widely used in the fields of aerospace, aviation, electronics, electric power, metallurgy, machinery, sports equipment and so on. It is widely used in high temperature resistant materials, high voltage switchgear alloy, electrodeposited electrodes and microelectronic materials.
Silver tungsten materials are made of higher tungsten content, burned contacts for large low voltage circuit breakers, and carry a stable line current molded case circuit breaker contacts and a variety of protective circuit breaker equipment. These contacts can also be used for high current contact resistance welding and arc erosion. Silver tungsten electrode is generally used for aluminum, magnesium alloy AC welding.