| The tungsten carbide powder was sintered with various metal binders in order to get the necessary information for the manufacture of tungsten carbide tips. The experimental results showed that a good quality of sintered product was obtained when the tungsten carbide powder, mixed with cobalt powder, was pressed at a pressure of 5 ton/㎠ and sintered at 1350℃ for 2 hours. However, the quality of product, using iron or nickel powder as a binder instead of cobalt, was not satisfactory. It is also found that the properties of sintered product, obtained using various binders, seem mainly to result from the characteristics of grain growth caused by $quot;Solution and precipitation$quot; phenomena during sintering. |
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