Elastic after-effect in WC/Co cemented carbide

摘要: Abstract Free-decay internal friction measurements as a function of temperature and frequency have been used to study the inherent viscous behavior Co binder present at grain boundaries WC/Co cemented carbide material. The presence relaxation peak was related micromechanism anelastic grain-boundary sliding peak-shift analysis presented frequency. Using mechanics elastic after-effect, both viscosity activation energy intergranular could be determined. A comparison data carried out with obtained on bulk metal in high-purity state or solid solution small volume fraction WC. binder, determined by friction, showed good agreement Co/WC solution, whose chemical composition presumably closest cermet Based between viscosities well values, it is considered that method can more generally ceramic/metal materials.