TY - JOUR A1 - Klein, P. A1 - Zhang, Z. A1 - Friedrich, K. A1 - Theiler, Géraldine A1 - Hübner, Wolfgang T1 - Zur Bildung von Transferfilmen bei ausgewählten PTFE-Compounds JF - Tribologie und Schmierungstechnik KW - Wear KW - Transfer film KW - Polytetrafluoroethylene KW - Composites PY - 2003 SN - 0724-3472 VL - 50 IS - 4 SP - 32 EP - 36 PB - Expert Verlag CY - Renningen AN - OPUS4-12663 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Hübner, Wolfgang A1 - Theiler, Geraldine A1 - Klein, P. A1 - Friedrich, K. T1 - Tribological behaviour of PTFE composites against steel at cryogenic temperatures T2 - Abstracts, papers, posters of the WTC 2001 T2 - 2nd World Tribology Congress ; 2nd WTC 2001 CY - Vienna, Austria DA - 2001-09-03 KW - PTFE composite KW - Cryogenic temperature KW - Transfer film KW - SEM KW - XPS PY - 2001 SN - 3-901657-09-6 SP - 1(?) EP - 4(?) PB - ÖTG CY - Vienna AN - OPUS4-12660 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Theiler, Geraldine A1 - Hübner, Wolfgang A1 - Gradt, Thomas A1 - Klein, P. A1 - Friedrich, K. T1 - Friction and wear of PTFE composites at cryogenic temperatures JF - Tribology International N2 - This paper presents investigations on the tribological behaviour of PTFE composites against steel at cryogenic temperatures. The results showed that the friction coefficient decreases with temperature down to 77 K, but did not follow a linear evolution further down to extreme low temperatures. It can be stated that the cryogenic environment has a significant influence on the tribological performance of the polymer composites. The effect of low temperatures was more clearly detected at low sliding speed, where friction heat is reduced. A change in wear mechanism from adhesive to abrasive was observed in this case. SEM and AFM analyses showed that the PTFE matrix composites investigated under these experimental conditions have transferred material onto the disc down to very low temperatures. Chemical analyses indicate the presence of iron fluorides. KW - PTFE composites KW - Cryogenic tribology KW - Transfer film PY - 2002 DO - https://doi.org/10.1016/S0301-679X(02)00035-X SN - 0301-679X VL - 35 IS - 7 SP - 449 EP - 458 PB - Butterworth-Heinemann CY - Oxford AN - OPUS4-1866 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -