TY - JOUR A1 - Häusler, Ines A1 - Dörfel, Ilona A1 - Peplinski, Burkhard A1 - Dietrich, Paul A1 - Unger, Wolfgang A1 - Österle, Werner T1 - Comprehensive characterization of ball-milled powders simulating a tribofilm system T2 - Materials characterization N2 - A model system was used to simulate the properties of tribofilms which form during automotive braking. The model system was prepared by ball milling of a blend of 70 vol.% iron oxides, 15 vol.% molybdenum disulfide and 15 vol.% graphite. The resulting mixture was characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and various transmission electron microscopic (TEM) methods, including energy dispersive X-ray spectroscopy (EDXS), high resolution investigations (HRTEM) with corresponding simulation of the HRTEM images, diffraction methods such as scanning nano-beam electron diffraction (SNBED) and selected area electron diffraction (SAED). It could be shown that the ball milling caused a reduction of the grain size of the initial components to the nanometer range. Sometimes even amorphization or partial break-down of the crystal structure was observed for MoS2 and graphite. Moreover, chemical reactions lead to a formation of surface coverings of the nanoparticles by amorphous material, molybdenum oxides, and iron sulfates as derived from XPS. PB - Elsevier CY - New York, NY KW - Tribofilm model system KW - Ball milling KW - X-ray powder diffraction KW - Transmission electron microscopy PY - 2016 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/35051 AN - OPUS4-35051 SN - 1044-5803 SN - 1873-4189 VL - 111 SP - 183 EP - 192 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany