Tribological exams ended up completed utilizing a ball-on-disc T-eleven tester. The balls had been made from steel, While the discs were being made from steel, aluminium oxide, zirconium oxide, polyamide and poly(methyl methacrylate). The outline of your device and the procedures is presented from the literature (Szczerek and Tuszyński in https://sandrat947ckr1.wizzardsblog.com/profile