451387.fig.001
Figure 1: Scheme of plane contact (pin-on-disc): (1) speed regulator, (2) support, (3) rotating tray, (4) load applied, (5) sample, (6) retaining frame; friction pairs used: Ti-6Al-4V and Ti-6Al-7Nb sliding against number 320 abrasive paper; sliding distance: 1400 m.