729756.fig.005
Figure 5: Dependence of surface roughness of wear track (Ra) of specimens under tests: pure UHMWPE (1), N + implanted UHMWPE with dozes: 0.5 (2), 1 (3), 2 1 0 1 7 (4); nanocomposites: UHMWPE +0.5 wt.% HA without surface treatment (5) and implanted with dozes 0.5 (6), 1 (7), 2 1 0 1 7 N + (8); microcomposites: UHMWPE +20 wt.% HA without ion implantation (9) and implanted with dozes 0.5 (10), 1 (11), 2 1 0 1 7 N + (12) at the steady-state wearing stage.