Some Properties of WC-10mass%Co Cemented Carbide Affected by Carbonizing Temperature of Tungsten Carbide Powders.

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  • 硬質材料　　ＷＣ‐Ｃｏ超硬合金の性質に及ぼすＷＣ粉末の炭化温度の影響
  • WC-Co チョウコウゴウキン ノ セイシツ ニ オヨボス WC フンマツ ノ タンカ オンド ノ エイキョウ

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Abstract

Some properties of WC-Co alloy as well as those of WC powder were studied relating to the carbonizing temperature of starting WC powder having the same grain size (2.5μm) . The WC powder carbonized at low temperature (L-WC) appeared to be pulverized more easily, compared with the powder carbonized at high temperature (H-WC). In other words, sintered alloys prepared by using L-WC showed often the micro-structure containing coarse WC grains which anomaly grew, suggesting that H-WC was more stable than L-WC. However, the H-WC seemed to be not necessarily advantageous, considering that the above result was changeable according to manufacturing history of the alloy.

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