A dynamic computational model developed within the context of the classical theory of phase evolution is applied to the W–C system to simulate the kinetics of graphite nucleation during non-equilibrium peritectic melting of WC. The kinetic variables used in the model are obtained directly from the free energy formulations that characterize the stable and metastable equilibria between WC, liquid...

Tungsten carbide has been proposed to be a potential inexpensive alternative to platinum for catalyzing hydrogenation reactions. Using density functional theory (DFT) calculations, we performed a systematic study on the geometries and electronic structures of small (WC)n (n 1⁄4 1–10) clusters. A cubic-like growth of WC clusters was found to be the preferred pathway. The interactions between the...

The article presents the results of surface hardening tungsten­carbide hard alloys carried out using concentrated energy flows. VK6­OM alloy with a thickness 20 μm is applied to VK10KS by method electric spark treatment. In this case, hardened layer consisting W 2 C obtained. hardness resulting 22,000 MPa and friction coefficient 0.23 (compared original 0.41); strong but insufficiently wear­res...