Improved cemented carbides
AssigneeHyperion Materials & Technologies, Inc.
InventorsOlivier Ther, Daniela Andreina Sandoval Ravotti
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Abstract
Provided are cemented carbides having a hard phase including tungsten carbide (WC), a binder phase including Co, and an additive being a grain growth inhibitor either (I) selected from the group consisting of Mo2C, TiC, TaC, and NbC, and mixtures thereof, the grain growth inhibitor not containing Cr3C2 and VC or (II) selected from the group consisting of ZrC, BN, Mo2C, TiC, TaC, NbC, VC, and Cr3C and mixtures thereof. The provided cemented carbides have improved properties, such as improved galling resistance, Vickers hardness, Palmqvist fracture toughness and coercive force.
Claims20
A cemented carbide, comprising:
- a hard phase comprising WC;
- a binder phase comprising Co;
- and
- an additive being a grain growth inhibitor selected from the group consisting of Mo2C, TiC, TaC, and NbC, and mixtures thereof.
A cemented carbide, comprising:
- a hard phase comprising WC;
- a binder phase comprising Co;
- and
- an additive being a grain growth inhibitor selected from the group consisting of ZrC, and BN, and mixtures thereof.
A method of improving galling resistance, comprising:
- providing a cemented carbide sample comprising a hard phase comprising WC, a binder phase comprising Co, and an additive being a grain growth inhibitor comprising either (I) Mo2C, TiC, TaC, and NbC, or (II) ZrC, BN, Mo2C, TiC, TaC, NbC, VC, and Cr3C.
Dependencies are inferred from the claim text.