Tungsten Silicide Producing

Producing tungsten silicide there has two ways: one is through the reaction of tungsten powder and silicon powder in an argon gas into the vacuum extraction, and the other is making tungsten and silica powder to sintered at 1200 ℃ in an argon atmosphere by calcinate.
There are introduce using tungsten powder and silicon powder in a vacuum process to produce tungsten the producing processes which are as follows:
1. The tungsten powder and silicon powder ingredient at a molar ratio of 1: 2, titanium powder and graphite powder ingredient at a molar ratio of 1: 1, and then were mixed evenly by separately.
2. The silicon powder and tungsten powder mixed powder packed in crucibles middle, the titanium powder and graphite powder packed in crucibles middle where the tungsten-silicon mixed powder be. Finally, put titanium-ink mixed powder on top of all the mixed powder at the middle of crucibles. In the middle of crucibles where has mixed powder of tungsten-silicon and titanium-ink mixed powder and the weight ratio of (0.8 to 1.2): 1.
3. Replace the crucible into sealed reactor, evacuated, then filled with argon, and then stare the reaction of mixture powered.
4. After the material is cooled removal the materials, and then apart the titanium carbide and tungsten disilicide separated, respectively, to obtain crushed tungsten disilicide and titanium carbide powder.

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