Tungsten alloy is an alloy composed of tungsten as the base and other elements added.
Tungsten alloy is an alloy composed of tungsten as a base and other elements. In the metal, tungsten melting point is higher, high temperature strength and creep resistance, as well as thermal conductivity, electrical conductivity and electron emission properties are good, than the major, in addition to a large number of manufacturing cemented carbide and alloy additives, tungsten and its alloys are widely used in the electronics, electric light industry, but also in the aerospace, casting, weapons and other departments used in the production of rocket nozzle, die-casting molds, armor-piercing bullet core, contacts, heaters, and heat shielding screen, and so on.
Use
Tungsten was first used in the production of incandescent filaments. 1909 U.S. Kuliji (W.D. Coolidge) used tungsten powder pressing, remelting, spinning and forging, drawing process made of tungsten wire, tungsten filament production has been rapid development since then. 1913 Lanmuir (I. Langmuir) and Rogers (W. Rogers). Rogers) found that tungsten thorium wire (also known as thorium tungsten wire) emits electrons better than pure tungsten wire, began to use tungsten thorium wire, is still widely used.
In 1922, a tungsten wire (called doped tungsten wire or non-sagging tungsten wire) with excellent anti-sagging properties was developed, which was a major progress in the research of tungsten wire. Non-sag tungsten filaments are widely used as excellent filament and cathode materials.