Cemented carbide and cutting tool

   
   

There is provided a cemented carbide comprising a hard phase component which comprises a tungsten carbide (WC) and at least one selected from carbides, nitrides and carbonitrides of metals of the groups 4a, 5a and 6a in the periodic table; and a binder phase component comprising at least one of iron-group metals, wherein the surface region of the cemented carbide has 90-98% of the minimum hardness as compared with internal hardness, thereby having high hardness and toughness which is suitable to using as a cutting tool.

È fornito un carburo cementato che contiene un componente duro di fase che contiene un carburo di tungsteno (WC) ed almeno uno scelto dai carburi, nitruri e carbonitrides dei metalli dei gruppi 4a, 5a e 6a nella tabella periodica; e un componente di fase del raccoglitore che contiene almeno uno i metalli del ferro-gruppo, in cui la regione di superficie del carburo cementato ha 90-98% della durezza minima rispetto a durezza interna, quindi aventi alte durezza e durezza che è adatta a usando come utensile per il taglio.

 
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