Abstract:Consolidation and oxidation of Ultra fine WC-Co-HfB 2 Hard Materials
By spark plasMa sinteringIn this study, a novel composite was fabricated by adding the Hafnium diboride (HfB 2 ) to conventional WC-Co cemented carbides to enhance the high-temperature properties while retaining the intrinsic high hardness. using spark plasma sintering, high density (up to 99.4%) WC-6Co-(1, 2.5, 4, and 5.5 wt. %) HfB 2 composites were consolidated at 1300℃ (100℃/min) under 60 MPa pressure. The microstructural evolution, oxida… Show more
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