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US 12,565,696 B2Granted
Tungsten carbide-based cemented hard material
AssigneeCERATIZIT Luxembourg S.a.r.l.
InventorsClaudio Bertalan, Ralph Useldinger, Rolf Koesters
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Abstract
A tungsten-carbide-based hard material includes the following components: tungsten carbide with an average particle size of 0.1-1.3 μm; 1.0-5.0 wt. % (Co+Ni), with a ratio of Co/(Co+Ni) in wt. % of 0.4≤Co/(Co+Ni)≤0.95; 0.1-1.0 wt. % Cr, with a ratio of Cr to (Co+Ni) in wt. % of 0.05 Cr/(Co+Ni) 0.20; 0.01-0.3 wt. % Mo; and 0.02-0.45 wt. % Me, where Me represents one or more elements from the group Ta, Nb, Hf and Ti, preferably Ta and/or Nb; and wherein 0.01≤Me/(Co+Ni)≤0.13.
Claims17
A tungsten carbide-based cemented hard material, comprising:
- tungsten carbide having an average particle size of 0.1-1.3 μm;
- 3.6-5.0% by weight of (Co+Ni), with a ratio of Co to (Co+Ni) in % by weight of 0.4≤Co/(Co+Ni)≤0.95;
- 0.1-1.0% by weight of Cr, with a ratio of Cr to (Co+Ni) in % by weight of 0.05≤Cr/(Co+Ni)≤0.20;
- 0.01-0.3% by weight of Mo;
- and
- 0.02-0.45% by weight of Me, where Me is one or more elements selected from the group consisting of Ta, Nb, Hf and Ti;
- and
- 0.01≤Me/(Co+Ni)≤0.13.
5 more elements
Dependencies are inferred from the claim text.