Tungsten Oxide Using Spark Plasma Sintering To Produce Tungsten Carbine (2)

Spark plasma sintering method (referred SPS) using special pulsed DC current producing discharge plasma between tungsten oxide particle, so that the particle surface activation to give a good performance WC in the materials synthesis and rapid low-temperature sintering has a unique advantage. Besides it has a very significant technology condition advantages. For example: uniform heating, low sintering temperature, sintering time is short, high production efficiency, product organization even small and easy to operate. SPS is currently in thermoelectric materials, magnetic materials, functionally graded materials, composite functional materials and nano-materials and so achieved good results. Tungsten oxide using SPS to produce tungsten carbide the producing process as follows:
1. Producing the carbon content is 12% -17% tungsten oxides and carbon black mixture, while using thermal analyzer the reaction mixture of tungsten oxide and carbon black.
2. ball-milling in drum mill with ethanol for wet grinding 48 hours, drying in 100 ℃, sieving 149um sieve, charged in a graphite mold.
3. Sintered in SPS-3.20-MV type discharge plasma sintering apparatus.
4. Using optical microscopy and scanning electron microscopy analysis samples.

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