TY - CONF A1 - Theiler, Géraldine A1 - Gradt, Thomas T1 - Influence of the counterface on the sliding behavior of polymer materials in hydrogen N2 - This presentation deals with the influence of the counterface materials on the sliding behaviour of some polymer materials in hydrogen. Polyimide (PI), polyetheretherketone (PEEK) and Polytetrafluoroethylene (PTFE) materials were investigated against hardened 52100 martensitic bearing steel and 304 austenitic stainless steel with similar roughness (Ra = 0.2 μm). Results indicate that the friction and wear of PI and PEEK materials depend on the counterface material. This effect wasn’t observed for PTFE composites. While the tribological performance of polyimide is better against 52100 in hydrogen, improved sliding behaviour of PEEK materials is observed with 304 counterface, particularly at higher sliding speed. Surface analyses of the transfer film reveal that the influence of the counterface is primarily related to the chemical nature of the steel for PI and to the thermal conductivity of the disc for PEEK materials. T2 - Hydrogenius & I2CNER Tribology Symposium CY - Online meeting DA - 29.01.2021 KW - Polymers KW - Hydrogen KW - Counterface KW - Friction KW - Wear PY - 2021 AN - OPUS4-52093 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -