Tribological assessments had been carried out using a ball-on-disc T-eleven tester. The balls were made from steel, Whilst the discs were being crafted from steel, aluminium oxide, zirconium oxide, polyamide and poly(methyl methacrylate). The description on the unit and the techniques has become presented in the literature (Szczerek and Tuszyński https://miriamf825taf7.is-blog.com/profile