Use of Ti in hard metal alloys – Part II: mechanical properties |
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Authors: | J D Lamim H C P de Oliveira A C Batista R S Guimarães M Filgueira |
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Affiliation: | Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF) / Centro de Ciência e Tecnologia (CCT) / Programa de Pós‐Gradua??o em Engenharia e Ciência dos Materiais (PPGECM) / Av. Alberto Lamego 2000, Campos dos Goytacazes / Rio de Janeiro, CEP:28013‐600, Brasil |
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Abstract: | WC‐Co hard metal is a material of high hardness, high compressive strength and wear resistance while maintaining good toughness and thermal stability. Samples of nanosized WC powders with 10 wt% Co, WC‐10 wt% Ti, WC‐9 wt% Ti‐1 wt% Co were cold pressed at 200 MPa and sintered at 1500°C during 1 hour under vacuum of 10–2 mbar. The characterization of the sintered materials was performed by the measurements of densification, HV30 hardness, fracture toughness and compression strength. The results showed that it is possible to process a hard metal through a Powder Metallurgical conventional route from nanoscaled WC grains, using Ti (or a Ti‐Co mixture) as a binder phase, with good mechanical properties. |
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Keywords: | conventional sintering WC nanometric powder mechanical properties Konventionelles Sintern WC Nanopulver mechanische Eigenschaften |
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