Tungsten Carbide Nozzle Microwave Sintering Technology III

Some scientists also found that the microwave field can enhanced the effect of ionic conductivity, and they think high-frequency electric field can promote the transfer of the surface of grain charged vacancy so that the grain is in plastic deformation and promote the sintering of conduct to some extent. In addition, the neck area of sintering that is highly affected by the electric field, which can also make local area ionization for further accelerating the mass transfer process.

The most main advantage of tungsten carbide nozzle microwave sintering is that the microwave was directly coupling with material. Due to the volume of microwave heating, the whole area can receive zero gradient material uniformly heated. The decreases of internal material thermal stress, the decreases of cracking and the deformation occurs, and the material microwave can be absorbed directly into heat so that energy usage has been greatly improved and saved about 80% of energy than conventional sintering.









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