Fig. 7.

a Relative density obtained at different sintering temperatures with WC composites with 6 wt% ZrO₂ (stabilized with varying amount of Y₂O₃) sinter-additive [111]. Densification curves for b pure WC sintered at 1800 °C for holding 5 min, c WC3Z and WC10Z specimens sintered at 1600 °C for holding 5 min [104].

Figure panels reproduced from Ref. [111] with permission from Elsevier copyright 2005, Ref. [104] with permission from Elsevier copyright 2013