Tribological tests ended up completed utilizing a ball-on-disc T-11 tester. The balls were being fabricated from metal, whereas the discs have been crafted from metal, aluminium oxide, zirconium oxide, polyamide and poly(methyl methacrylate). The description with the machine and also the strategies has become supplied within the literature (Szczerek and https://immanuele815sai7.dailyblogzz.com/profile