Tungsten Alloy(a)

According to different uses, tungsten alloys are divided into tungsten carbide, heavy alloy, metal sweating materials, contact materials, electronic and electric light materials.

Tungsten doped tungsten powder is added in about 1% of silicon, aluminum and potassium oxide, in a sintered (since resistance sintering) process, volatile additives hydroxide, the formation of pores within the material, pores after processing edge axially elongated; after annealing, diffusion of pore-forming elongated parallel to the wire axis line of bubbles, this dispersion of bubbles bubble known as potassium.

Potassium tungsten bulbs impede lateral grain grow and improve high-temperature tungsten sag performance, but also to improve the room temperature ductility after recrystallization, help around the wire and transportation and storage. China doped tungsten values are in accordance with the high temperature creep WAl1, WAl2, WAl3 three kinds of grades.




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