TY - GEN A1 - Österle, Werner A1 - Urban, Ingrid A1 - Gesatzke, Wolfgang A1 - Rooch, Heidemarie ED - Bartz, Wilfried J. T1 - Characterization and evaluation of the formation of friction layers during braking with conventional PMC friction material against a cast iron rotor T2 - 14th International Colloquium Tribology, "Tribology and Lubrication Engineering" CY - Stuttgart, Germany DA - 2004-01-13 PY - 2004 SN - 3-924813-54-X VL - 1 SP - 483 EP - 489 PB - Techn. Akad. Esslingen CY - Ostfildern AN - OPUS4-3494 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Österle, Werner A1 - Dörfel, Ilona A1 - Gesatzke, Wolfgang A1 - Rooch, Heidemarie A1 - Urban, Ingrid T1 - Charakterisierung tribologischer Kontakte mit FIB und TEM KW - FIB KW - TEM KW - Verbundwerkstoff KW - Bremse KW - Diamantschicht PY - 2004 SN - 0032-678X N1 - Sprachen: Deutsch/Englisch - Languages: German/English VL - 41 IS - 4 SP - 166 EP - 179 PB - Hanser CY - München AN - OPUS4-3496 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Österle, Werner A1 - Urban, Ingrid T1 - Friction layers and friction films on PMC brake pads N2 - A rather new tool, the focused ion beam (FIB) technique, was used to characterise superficial layers at micro-contact areas of a commercial brake pad. The friction material was a polymer matrix composite (PMC) with approximately 50% metal content (semi-metallic) and the counter part was a cast iron rotor. Though the contact areas were not visible as topographic features, they could be identified with the aid of their increased secondary electron emission during FIB-scanning of the surface after tribological activation. Target preparation of micron-sized cross-sections with the FIB enabled the study of superficial layers at predetermined sites at high magnification. Depending on the constituent of the pad, one, two or three layers were identified. The three layer structure comprised: (i) a 100 nm thick friction film containing nanocrystalline metal oxides and an amorphous phase which was enriched with sulphur, (ii) a nanocrystalline friction layer of compacted wear debris accommodating surface roughness and (iii) a severely deformed layer if the supporting constituent was a metal particle. Though the majority of loose wear particles was iron oxide, the friction film which adhered tightly to the pad surface contained a large amount of copper and sulphur, whereas zinc was transferred to the cast iron rotor. KW - Brake KW - Friction film KW - Friction layer KW - Oxidational wear KW - FIB PY - 2004 U6 - https://doi.org/10.1016/j.wear.2003.12.017 SN - 0043-1648 VL - 257 IS - 1-2 SP - 215 EP - 226 PB - Elsevier CY - Amsterdam AN - OPUS4-7645 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Dloczik, L. A1 - Dittrich, T. A1 - Guminskaya, T. A1 - Grigorieva, N. A1 - Lux-Steiner, M. C. A1 - Tomm, Y. A1 - Urban, Ingrid T1 - CuAlO2 prepared from LiAlO2 by ion exchange reaction PY - 2004 UR - http://www.helmholtz-berlin.de/media/media/oea/web/pr_webseite/druckschriften/berichte/2003/hmi03_web.pdf#page=100 SP - 98 PB - Hahn-Meitner-Institut CY - Berlin AN - OPUS4-23343 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Gesatzke, Wolfgang A1 - Österle, Werner A1 - Rooch, Heidemarie A1 - Urban, Ingrid ED - Portella, Pedro Dolabella T1 - Präparation von Mikro-Querschnitten mit dem fokussierten Ionenstrahl (FIB) T2 - 37. Metallographie-Tagung CY - Berlin, Deutschland DA - 2003-09-17 PY - 2004 SN - 3-88355-322-0 SN - 0343-3579 N1 - Serientitel: Sonderbände der praktischen Metallographie – Series title: Sonderbände der praktischen Metallographie IS - 35 SP - 145 EP - 149 PB - Werkstoff-Informationsges. CY - Frankfurt AN - OPUS4-7641 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -