Laser processing of cutting tool materials particularly cemented carbides can induce many surface defects including porosity, balling, and micro-cracks. When present in the microstructure tools, micro-cracks lead to chipping early failure. The detection identification cracks be used predict performance post laser processing. To develop a method for crack scanning electron microscopy (SEM) image...

WC-based cemented carbides were prepared by spark plasma sintering (SPS) of WC-Co-Cr3C2-VC alloy powder adding different contents graphene. The phase composition, microstructure, mechanical properties, and magnetic properties carbide investigated means XRD, SEM, Vickers hardness fracture toughness tests, tests. results showed that the specimens show a trend first increasing then decreasing with...

Transition metal carbides have been utilized as an alternative catalyst to expensive noble metals for the conversion of biomass. Tungsten and molybdenum carbides have been shown to be effective catalysts for hydrogenation, hydrodeoxygenation and isomerization reactions. The satisfactory activities of these metal carbides and their low costs, compared with noble metals, make them appealing alter...

The present work adresses the evaluation of modified 9Cr-1Mo steels magneic hystersis loop and magnetic Barkhsuen emission techniques for the samples subjected to high temperature ageing for different durations. The initially quenched and then tempered material revealed different magnetic behaiour with ageing. The relxation of stresses and reduction of high value of dislocations due to quenchin...

The electronic structure of the ground state of monoxides MO and carbides MC2 with M an alkaline-earthmetal atom (Be to Ba) has been investigated. Bond energies, vibrational frequencies, dipole moments and equilibrium bond lengths have been calculated using a hybrid density functional method. To understand the bonding characteristics, the ELF (electron localization function) and the NBO (natura...