Fig. 16

Surface morphology of the worn traces on the Al2O3 balls after sliding against the as-cast CoCrFeNiNb0.25 (a), CoCrFeNiNb0.45 (b) and CoCrFeNiNb0.65 (c) alloys.
Surface morphology of the worn traces on the Al2O3 balls after sliding against the as-cast CoCrFeNiNb0.25 (a), CoCrFeNiNb0.45 (b) and CoCrFeNiNb0.65 (c) alloys.