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 T2 - Industrial & materials technologies programme (EUR 17766) 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 - GEN A1 - Wahi, R. A1 - Chen, Weiye A1 - Kutumbarao, V. A1 - Skopp, André ED - Andersen, S. T1 - Deformation behaviour of NIMONIC PE16 under creep and tensile loading at 650°C T2 - Constitutive relations and their physical basis T2 - 8th Risø International Symposium on Metallurgy and Materials Science CY - Roskilde, Denmark DA - 1987-09-07 PY - 1987 SN - 87-550-1331-7 SP - 537 EP - 542 PB - Risø National Laboratory CY - Roskilde, Denmark AN - OPUS4-2401 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Woydt, Mathias A1 - Skopp, André ED - Zambelli, G. ED - Vincent, L. T1 - Céramiques et Composites à Matrice Céramique T2 - Matériaux et contacts PY - 1998 SN - 2-88074-338-9 N1 - Sprachen: Englisch/Französisch - Languages: English/French SP - 187 EP - 196 PB - Presses polytechniques et universitaires romandes CY - Lausanne AN - OPUS4-2422 LA - mul AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Woydt, Mathias A1 - Skopp, André A1 - Wäsche, Rolf ED - Carlsson, R. T1 - Ceramic-ceramic composite materials with improved friction and wear properties T2 - Proceedings of the 4th International Symposium on Ceramic Materials and Components for Engines T2 - 4th International Symposium Ceramic Materials and Components for Engines CY - Göteborg, Sweden DA - 1991-01-01 PY - 1992 SN - 1-85166-776-8 SP - 1219 EP - 1239 PB - Elsevier CY - London AN - OPUS4-2409 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Woydt, Mathias A1 - Skopp, André A1 - Hantsche, Harald T1 - Ceramic wear track characterization by advanced X-ray diffraction JF - Rigaku-journal PY - 1992 SN - 0913-543X VL - 9 IS - 2 SP - 9 EP - 16 PB - Rigaku-Denki-Kabushiki-Kaisha CY - T¯oky¯o AN - OPUS4-2410 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -