TY - JOUR A1 - Beck, Uwe A1 - Reiners, Georg A1 - Urban, Ingrid A1 - Witt, Klaus T1 - Evaluation of optical properties of decorative coatings by spectroscopic ellipsometry PY - 1992 SN - 0040-6090 VL - 220 SP - 234 EP - 240 PB - Elsevier CY - Amsterdam AN - OPUS4-6960 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Beck, Uwe A1 - Reiners, Georg A1 - Urban, Ingrid A1 - Jehn, H.A. A1 - Kopacz, U. A1 - Schack, H. T1 - Decorative hard coatings: new layer systems without allergy risk PY - 1993 SN - 0257-8972 VL - 61 SP - 215 EP - 222 PB - Elsevier Science CY - Lausanne AN - OPUS4-6957 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dörfel, Ilona A1 - Urban, Ingrid T1 - TEM-Untersuchungen der Randzonenschädigung von Aluminiumoxidkeramiken nach Schleifbearbeitung N2 - Es werden elektronenmikroskopische Untersuchungsergebnisse an Al2O3-Keramiken, die verschiedenen Oberflächenbearbeitungsverfahren unterworfen wurden, vorgestellt. Die Untersuchungen dienen dem Ziel der Optimierung der Oberflächenbearbeitung von keramischen Werkstoffen, wobei der Einfluß leistungsfähiger Bearbeitungsverfahren auf die Ausbildung möglichst schädigungsarmer Oberflächenschichten, die keinen negativen Einfluß auf Festigkeitskennwerte aufweisen, betrachtet wird. Die Wirkung verschiedener Schleif- und Polierprozesse auf Oberflächenveränderungen bearbeiteter Werkstücke wird dargestellt. Es wurde sowohl die Mikrostruktur der geschädigten Randzonenschicht als auch die des unbeeinflußten Grundmaterials mit elektronenmikroskopischen Methoden charakterisiert. Die verschiedenen Schädigungsstadien gestatten eine Einschätzung der Stärke des Störungseintrages in das Material durch verschiedene Schleif- und Polierprozesse. KW - Elektronenmikroskop KW - Transmissionselektronenmikr. KW - Schleifen KW - Polieren KW - Aluminiumoxidkeramik KW - Randzonenschädigung KW - Oberflächenbearbeitung PY - 1996 U6 - https://doi.org/10.1002/mawe.19960270609 SN - 0933-5137 SN - 1521-4052 VL - 27 IS - 6 SP - 307 EP - 312 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-651 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Ressel, P. A1 - Österle, Werner A1 - Urban, Ingrid A1 - Dörfel, Ilona A1 - Klein, A. A1 - Vogel, K. A1 - Kräutle, H. T1 - Transmission electron microscopy study of rapid thermally annealed Pd/Ge contacts on IN0.53Ga0.47As PY - 1996 SN - 0021-8979 SN - 1089-7550 VL - 88 SP - 3910 EP - 3914 PB - American Institute of Physics CY - Melville, NY AN - OPUS4-2514 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Klein, A. A1 - Urban, Ingrid A1 - Ressel, P. A1 - Nebauer, E. A1 - Merkel, U. A1 - Österle, Werner T1 - Preparation, transmission electron microscopy, and microanalytical investigations of metal-III-V semiconductor interfaces PY - 1996 SN - 1044-5803 SN - 1873-4189 VL - 37 SP - 143 EP - 151 PB - Elsevier CY - New York, NY AN - OPUS4-2528 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Österle, Werner A1 - Dörfel, Ilona A1 - Urban, Ingrid A1 - Reier, T. A1 - Schultze, J. T1 - XPS and XTEM study of AlN formation by N+2 implantation of aluminium N2 - X-ray photoelectron spectroscopy (XPS) and cross-sectional transmission electron microscopy (XTEM) were used to study the formation of AlN films by N+2 ion implantation of aluminium at energies of 3 keV and 100 keV. In both cases, a two-stage mechanism was found, comprising first the oriented precipitation of small particles of the hexagonal AlN-phase, followed by growth and coalescence finally forming a continuous AlN-layer while increasing the implantation dose from 1×1017 cm-2 to 2×1017 cm-2. The results of both methods are in excellent agreement and furthermore provide complementary information concerning chemical composition and binding energies as well as microstructural details. KW - AIN KW - Aluminium KW - N2+ KW - Implantation KW - XPS KW - XTEM PY - 1998 U6 - https://doi.org/10.1016/S0257-8972(98)00355-7 SN - 0257-8972 VL - 102 IS - 1-2 SP - 168 EP - 174 PB - Elsevier Science CY - Lausanne AN - OPUS4-2363 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dörfel, Ilona A1 - Österle, Werner A1 - Urban, Ingrid A1 - Bouzy, E. T1 - Microstructural characterization of binary and ternary hard coating systems for wear protection - Part I: PVD coatings N2 - Different wear-resistant coatings produced by physical vapour deposition (PVD) were characterized with the aid of cross-sectional transmission electron microscopy (XTEM). All coating systems were optimized by the producers and exhibited good properties with respect to their special applications. The microstructure, texture and chemical composition of binary and ternary systems produced by the arc process [TiN, CrN, Cr2N (Ti, Cr)N on steel substrates] and magnetron sputtering process [TiN, CrN on steel substrates, (Ti, Al)N on Si-substrate] were investigated. All coatings had a more or less columnar microstructure, which was interrupted by interlayers in some cases. Whereas arc coatings always did show some kind of substrate modification, the latter was not observed after magnetron sputtering. Electron diffraction normally revealed a mono-phase fcc structure, except at sites very near to the interface. Only for the systems Cr–N and (Ti, Cr)–N were different additional phases observed at low nitrogen partial pressures. KW - Arc bond sputtering KW - Arc deposition KW - Magnetron sputtering KW - TEM KW - XTEM PY - 1999 UR - http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVV-3VTRSCY-G&_user=963821&_coverDate=01%2F29%2F1999&_rdoc=14&_fmt=summary&_orig=browse&_srch=doc-info(%23toc%235544%231999%23998889997%2360972%23FLA%23display%23Volume)&_cdi=5544&_sort=d&_docanch U6 - https://doi.org/10.1016/S0257-8972(98)00735-X SN - 0257-8972 VL - 111 IS - 2-3 SP - 199 EP - 209 PB - Elsevier Science CY - Lausanne AN - OPUS4-2364 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Dörfel, Ilona A1 - Österle, Werner A1 - Urban, Ingrid A1 - Bouzy, E. A1 - Morlok, O. T1 - Microstructural characterization of binary and ternary hard coating sytems for wear protection - Part II: Ti(CN) PACVD coatings KW - Microstructure KW - PACVD KW - Solid lubrication KW - Texture KW - TiC KW - TiN KW - Ti(CN) PY - 1999 SN - 0257-8972 VL - 116-119 SP - 898 EP - 905 PB - Elsevier Science CY - Lausanne AN - OPUS4-2365 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Österle, Werner A1 - Urban, Ingrid A1 - Severin, D. A1 - Trepte, S. T1 - Correlations between surface modification and tribological performance of brake pads N2 - The formation of a third body layer on a conventional friction material during braking tests was studied in some detail using TEM, SEM, and X-ray photoelectron spectroscopy (XPS) techniques. Plate shaped micro-contact areas representing a compositional mix of all components of the tribocouple and exhibiting a nanocry stalline microstructure were identified after a run-in period. PY - 2001 U6 - https://doi.org/10.1179/026708401101517700 SN - 0267-0844 SN - 1743-2944 VL - 17 IS - 2 SP - 123 EP - 125 PB - Institute of Metals CY - London AN - OPUS4-2367 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Österle, Werner A1 - Griepentrog, Michael A1 - Gross, Thomas A1 - Urban, Ingrid T1 - Chemical and microstructural changes induced by friction and wear of brakes N2 - The chemical and microstructural changes occurring during braking simulation tests at the surface of a conventional brake pad material were investigated mainly by scanning and transmission electron microscopy and surface analytical techniques. It can be shown that patches of a third body material develop, comprising a compositional mix of all constituents of the pad and iron oxides from the disk. Milled debris particles still have the crystal structure of barite, the major phase of the pad material, but the grain size is reduced drastically to the nanometer scale. The major wear mechanism is delamination of filler particles from the organic binder, supported by local degradation of the phenolic resin during asperity heating. Quartz crystals are preserved thereby adopting the function of primary contact areas. KW - Brake KW - Third body material KW - Friction layer KW - Electron microscopy PY - 2001 U6 - https://doi.org/10.1016/S0043-1648(01)00785-2 SN - 0043-1648 VL - 251 SP - 1469 EP - 1476 PB - Elsevier CY - Amsterdam AN - OPUS4-2371 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -