Table 3.

Measurement of nanowear tracks for PEEK and CFRPEEK after the nanoscratch tests. * p < 0.05, statistically significant difference, PEEK versus CFRPEEK in the same experimental conditions.

	Applied Load (mN)	Wear Width (μm)	Wear Depth (μm)	Pile-up Height (μm)
PEEK	10	10.103 ± 0.301	1.392 ± 0.567	1.521 ± 0.101
	30	19.387 ± 0.526	3.264 ± 0.844	3.631 ± 0.186
	60	28.433 ± 0.325	6.932 ± 1.328	6.018 ± 0.345
CFRPEEK	10	10.107 ± 0.617	1.551 ± 0.658 *	1.796 ± 0.156 *
	30	19.287 ± 0.767	2.731 ± 1.495 *	3.912 ± 0.303
	60	26.692 ± 0.531 *	5.051 ± 1.878 *	6.317 ± 1.165