Tungsten-rhenium Alloy and Preparation Method

The invention discloses a tungsten-rhenium alloy which contains 65-75ppm of potassium and 0.45-0.55% of rhenium.

The invention also discloses a manufacturing method of the tungsten-rhenium alloy, which comprises the following steps: A. preparing doping tungsten-rhenium powder: mixing doping tungsten powder solid and ammonium rhenate solution to obtain a doping tungsten-rhenium instillation, and drying the instillation to obtain doping tungsten-rhenium powder, wherein in the mixing process, the temperature is kept at 30-50 DEG C and the solid-liquid weight ratio is (100-300):5; B. reducing to obtain tungsten-rhenium mixed powder; C. compacting; D. presintering; and E. sintering to obtain the tungsten-rhenium alloy.

The method has the advantages of simple technique, uniform distribution of doping rhenium in the alloy, and favorable material uniformity; and the prepared tungsten-rhenium alloy has favorable high temperature properties and processability, and thus, is an ideal new material for lamp filaments.




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