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    • 10. 发明授权
    • Sintered hard material
    • 烧结硬质材料
    • US6030912A
    • 2000-02-29
    • US12576
    • 1998-01-23
    • Tsutomu YamamotoKazuhiro Tezuka
    • Tsutomu YamamotoKazuhiro Tezuka
    • C22C29/02C04B35/56C22C29/08
    • C04B35/645C04B35/5626
    • A sintered hard material according to the invention comprises 0.02 to 0.10 wt % of one or more metals selected from the group consisting of Fe, Co and Ni, 0.3 to 3.0 wt % of one or more compounds selected from the group consisting of carbides, nitrides and carbonitrides of transition metals of the IVa, Va and VIa groups of the periodic table and a residue of tungsten carbide component having an average particle size of 0.5 .mu.m or less, the tungsten carbide component containing WC and W.sub.2 C in a proportion W.sub.2 C/(WC+W.sub.2 C) of between 0.01 and 0.15, the W.sub.2 C in the tungsten carbide component having a lattice constant reduced by 0.3 to 1.5 %.
    • 根据本发明的烧结硬质材料包含0.02至0.10重量%的一种或多种选自Fe,Co和Ni的金属,0.3至3.0重量%的一种或多种选自碳化物,氮化物的化合物 和周期表的IVa,Va和VIa族的过渡金属的碳氮化物和平均粒径为0.5μm以下的碳化钨成分的残渣,WC / W2C的碳化钨成分的比例为W2C /( WC + W2C)为0.01〜0.15的情况下,具有晶格常数的碳化钨成分中的W2C为0.3〜1.5%。