20.500.12556/RUL-185676 Effects of electrical potential on the tribo-electric and frictional performance of a carbon-fiber-reinforced PEEK composite The rapid electrification of mechanical systems has intensified concerns about the effect of electrical potential on the tribological performance of polymer components used in electric drivetrains. Reciprocating ball-on-disk tribological tests were performed using a carbon-fiber-reinforced polyetheretherketone (PEEK CF30) disc sliding against an AISI 52100 steel ball under dry conditions while different DC voltages were applied across the contact. The results indicate that electrical potential affects the tribological behavior of the PEEK CF30/steel pair. In zero and low-to-moderate potentials (up to 10 V) the wear remains in the same range (10▫$^{−7}$▫ mm▫$^{3}$▫/Nm), while a potential of 20 V increases the wear by one order of magnitude to 6.76× 10▫$^{−6}$▫ mm▫$^{3}$▫/Nm. The friction also increased by 25%, achieving a value of 0.30 compared to the 0-V condition. However, at a high potential of 30 V, a softening effect becomes dominant, which in turn reduced the wear by three times to 2.08 × 10▫$^{−6 }$▫mm▫$^{3}$▫/Nm, accompanied by a friction decrease of 40%, reaching 0.19 relative to the 20-V condition. These findings demonstrate that electrical potential influences the tribological performance of polymeric composites reinforced with carbon fiber. The failure mechanisms in electrified tribological contacts are discussed for situations where the electric current acts as a tribo-chemical activation mechanism, the effects of which depend on the applied potential and the polymer composite's structure, promoting electrochemical reactions, Joule heating, accelerated wear, material transfer, and interfacial degradation. electrified contact polyetheretherketone (PEEK) carbon-fiber-reinforced polymer potential effect abrasive wear elektrificirani kontakti polietereterketon polimeri morebitni učinki abrazivna obraba true false true Angleški jezik Slovenski jezik Članek v reviji 2026-08-17 14:23:16 2026-08-17 14:23:21 2026-08-18 04:04:47 0000-00-00 00:00:00 2026 0 0 15 str. Vol. 603, art. 206960 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 537.221:678.71 0043-1648 10.1016/j.wear.2026.206960 287976963 Pereira_..._Effects_of_electrical....pdf Pereira_..._Effects_of_electrical....pdf 1 A3D11833FE805D52B0423D6D6A4EB65B 7af523a815b179b0b22416ba507bfe6b7e4ffd8a0bc4bbd917e47c9948a04773 af9212b3-9a36-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=244448 https://www.sciencedirect.com/science/article/pii/S0043164826004515 1 0f49111d-9a36-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=244447 Fakulteta za strojništvo 0 0 0