Tribological tests ended up completed using a ball-on-disc T-eleven tester. The balls were being crafted from steel, Whilst the discs have been made of metal, aluminium oxide, zirconium oxide, polyamide and poly(methyl methacrylate). The description on the product and also the strategies has been provided in the literature (Szczerek and https://hubbardm035doc3.blogcudinti.com/profile