The best Side of anionic cationic
Tribological exams had been completed using a ball-on-disc T-11 tester. The balls have been made of steel, Whilst the discs ended up crafted from metal, aluminium oxide, zirconium oxide, polyamide and poly(methyl methacrylate). The description from the unit as well as techniques is presented within the literature (Szczerek and Tuszyński in TriboTe