The fracture and fatigue characteristics of several cemented carbide grades are investigated as a function of their microstructure. In doing so, the influence of binder chemical nature and content (Co and 76wt%Co-24wt%Ni), as well as carbide grain size on hardness, flexural strength, fracture toughness and fatigue crack growth (FCG) behavior is evaluated. Mechanical testing is combined with a d...

Abstract A great deal of attention has been paid to friction and wear caused by current-carrying friction. In this study, diamond coatings were deposited on the cemented carbides (WC-Co) substrate hot filament chemical vapor deposition method. Although coating possessed a higher roughness than WC-Co substrate, it was effective at reducing coefficient improving effectiveness in process. presence...

In this study, activated nano TaC was introduced into WC-Co cemented carbides to enhance their comprehensive performance properties. Changes of mechanical properties, elements distributions, phase constitutions and microstructures the were examined as a function amount. It found that due addition TaC, nanoscale Co-rich particles cubic-Ta4C3 precipitates induced dispersed within WC grains, which...