TY - GEN A1 - Woydt, Mathias A1 - Skopp, André A1 - Kelling, Norbert A1 - Berger, L.-M. T1 - Thermally sprayed TiO2-x coatings under mixed lubrication and unlubricated sliding conditions T2 - Tribologie-Fachtagung 2004 CY - Göttingen, Deutschland DA - 2004-09-27 KW - Thermisch gespritzte Schichten KW - TiOx KW - Magnéli-Phasen KW - Tribologische Prüftechnik KW - Reibung KW - Verschleiß KW - Kolbenring/Zylinderlaufbahn PY - 2004 SN - 3-00-015053-6 SP - 1(?) EP - 13(?) PB - Ges. für Tribologie CY - Moers AN - OPUS4-4396 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Woydt, Mathias A1 - Skopp, André A1 - Kelling, Norbert A1 - Berger, L.-M. ED - Suchanék, J. T1 - Tribological Characterization of Titanium Suboxide Coatings Prepared by VPS Spraying T2 - 4th International Tribology Conference "Tribology of Surface Layers and Coatings" CY - Prague, Czech Republic DA - 2004-06-17 KW - Titanium oxide coatings KW - Thermal spraying KW - Unlubricated sliding wear KW - Lubricated sliding wear KW - Lubricants PY - 2004 SN - 80-2393123-7 PB - Czech Tribology Society CY - Prag AN - OPUS4-3638 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Woydt, Mathias A1 - Skopp, André A1 - Habig, Karl-Heinz T1 - Einfluß von Temperatur und Gleitgeschwindigkeit auf Festkörpergleitreibung und -verschleiß von Si3N4 bis 1000°C PY - 1989 SN - 0173-9913 SN - 0196-6219 VL - 66 IS - 10 SP - 426 EP - 432 PB - Göller CY - Baden-Baden AN - OPUS4-2402 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Skopp, André A1 - Woydt, Mathias A1 - Habig, Karl-Heinz T1 - Unlubricated sliding friction and wear of various Si3N4 pairs between 22°C and 1000°C PY - 1990 SN - 0301-679X VL - 23 IS - 3 SP - 189 EP - 199 PB - Butterworth-Heinemann CY - Oxford AN - OPUS4-2403 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Habig, Karl-Heinz A1 - Woydt, Mathias A1 - Skopp, André T1 - Dry friction and wear of self-mated sliding couples of SiC-TiC and Si3N4-TiN PY - 1991 SN - 0043-1648 VL - 148 SP - 377 EP - 394 PB - Elsevier CY - Amsterdam AN - OPUS4-2404 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Skopp, André A1 - Woydt, Mathias T1 - Expertise on ceramic type coatings: Compilation of the macroscopic, microscopic and micro analytical results of samples coated with present solution of 8Y2O3oZrO2 rub tested against SiC tipped IN 718 blade - Work package 4 N2 - Gas turbine efficiency is significantly influenced by the pressure losses caused by the inevitable gap between the rotating turbine blades and the stator parts. Because contact between rotor and stator cannot be completely avoided with a small gap, systems are designed to allow for some rubbing. Honeycombs or abradable MCrAlY stator coatings are normally used to minimize the wear of the rotor blades when rubbing occurs. But, more efficient solutions must be developed on modern engines, because both suffer temperature limitation and standard MCrAlY have usually poor abradability. For higher temperature and closer control of the gap, a thick thermal-barrier coating must be applied on the stator, but presently with no rub-tolerance. To increase the abradability of the stator coating, its composition and structure can be modified, but such changes must be strictly limited with respect to the loss of erosion resistance. The solution can then lie in the hardening of the rotating blade tip to permit the use of harder ceramic or metallic coatings on the stator with greater resistance to erosion. These systems typically consist, on the blade tip, of hard particles embedded in a softer metallic matrix. In the present programme, it is therefore intended: - to assess the present European solutions, standard or in development, for outer air seals and blade tips. - to develop coated grits or new grits for the hardening of the blade tips, as well as to improve the matrix and the stator coating for long life systems. - to optimize the most promising of these systems, that will be tested on development rigs and on engine. The consortium includes several engine manufacturers, which are the potential users of the innovating solutions to be developed, companies having a large experience in the field of abradables and tip coatings and non industrial partners involved in tribology and materials science. T2 - Project 2. Advanced Abradables and Tip Coatings for Gas Turbines (BRITE-EURAM BRPR960187) CY - Berlin, Germany DA - 1998-01-01 PY - 1998 SN - 92-828-3230-9 SN - 1018-5593 IS - 17766 SP - 1(?) EP - 244(?) PB - Off. for Off. Publ. of the Europ. Communities CY - Luxembourg AN - OPUS4-2426 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kloß, Heinz A1 - Skopp, André A1 - Woydt, Mathias ED - Bartz, Wilfried J. T1 - Wear prediction in ultra-high speed and high temperature applications PY - 2000 SN - 3-924813-44-2 VL - 3 SP - 1639 EP - 1646 PB - Techn. Akad. Esslingen CY - Ostfildern AN - OPUS4-2427 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Skopp, André A1 - Woydt, Mathias T1 - Charakterisierung des tribologischen Verhaltens von keramischen Gleitpaarungen mit moderner Oberflächenanalytik PY - 1991 SN - 0933-5137 SN - 1521-4052 VL - 22 IS - 8 SP - 289 EP - 300 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-2405 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Woydt, Mathias A1 - Skopp, André ED - Bartz, Wilfried J. T1 - Keramik-Keramik-Verbundwerkstoffe mit verbesserten Reibungs- und Verschleißeigenschaften T2 - 8. Internationales Kolloquium. Technische Akademie Esslingen ; 8th International Colloquium. Technische Akademie Esslingen CY - Esslingen, Deutschland DA - 1992-01-14 PY - 1992 SN - 3-924813-28-0 N1 - Serientitel: Internationales Kolloquium / Technische Akademie Esslingen – Series title: Internationales Kolloquium / Technische Akademie Esslingen VL - 2 IS - 8 SP - 15.1-1-15.1-16 PB - Techn. Akad. Esslingen CY - Ostfildern AN - OPUS4-2407 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Woydt, Mathias A1 - Skopp, André A1 - Wäsche, Rolf T1 - Ceramic-ceramic composite materials with improved friction and wear properties PY - 1992 SN - 0301-679X VL - 25 IS - 12 SP - 61 EP - 70 PB - Butterworth-Heinemann CY - Oxford AN - OPUS4-2408 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -