Tungsten Oxide Using Spark Plasma Sintering To Produce Tungsten Carbine (1)

Spark plasma sintering method (referred SPS), the technology is in between powder particles directly into the heating pulse current sintering. At the beginning the SPS technology has low productivity problem which has not been widely used. In recent years, with further research SPS as new technology for preparing material has attracted attention.
Tungsten carbide (WC) due to its high hardness, high flexural strength and excellent fracture toughness in many areas is widely using in many area. But the key to the producing high-performance WC is the grain size of the raw material powder. Traditional WC production process is: ammonium paratungstate →tungsten oxide → W → WC → ingredients → sintered block. But this process step is complicated and not easy to control the particle size. And using SPS producing WC is by pulsed DC current to produce discharge plasma between the tungsten oxide powder particles, so that the particle surface activation to give a good performance WC in the materials synthesis and rapid low-temperature sintering.

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