Spherical micron tungsten powder has the characteristics of isotropic and good dispersibility, is beneficial to get a close packing body, and has the pore structure is easy to maintain, in the process of sintering shrinkage and advantages of the grain growth is slow, is widely used in the cathode emission, porous materials and microcrystalline hard alloy and other fields.
Thermal plasma technology is an effective method for the preparation of spherical tungsten powder, the spherical tungsten powder system has the spherical degree and the advantages of high purity, density and good dispersibility, high sintering activity and special morphology showed better inhibition to the growth of grain.
Spherical micron tungsten powder can help the pore to penetrate the porous matrix. Spherical nanometer tungsten powder has the characteristics of uniform shrinkage, high sintering activity and inhibition of grain growth. Spherical micron tungsten powder exhibited better performance than conventional tungsten powder in composite materials, filtration materials and electronic materials, and showed a better application prospect.
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