Abstract:I n the powder metallurgical process of tungsten wire fabrication for incandescent lamps the stepwise reduction of tungsten oxides (WO, or W,,O,,) plays an important role in respect t o the efficiency of doping elements (especially potassium) for the formation of the non sag structure of tungsten wires. The influence of temperature and time in the reduction steps has been investigated by means of the X-ray method for determination of particle size and internal strain described by KOCHENDOERFER. It has been fou… Show more
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