TY - GEN A1 - Wäsche, Rolf A1 - Steinborn, Gabriele A1 - Klaffke, Dieter ED - Somiya, S. T1 - Gas pressure sintering of SiCp-alumina composites made by gelcasting and their tribological properties N2 - COMPOSITE MATERIALS OF A 99.7 % ALPHA-ALUMINA MATRIX WITH PLATELETS OF SILICON CARBIDE (SICP) HAVE BEEN PREPARED BY GELCASTING. DENSIFICATION WAS CARRIED OUT BY GAS-PRESSURE SINTERING WITHOUT FURTHER SINTERING AIDS. FIVE DIFFERENT COMPOSITIONS WITH 0, 5, 10, 15, AND 20 VOL.% SICP RESP. HAVE BEEN INVESTIGATED AND TRIBOLOGICAL PROPERTIES WERE CHARACTERIZED. INCREASING AMOUNT OF SICP AS RIGID PARTICLES IN THE FINE GRAINED MATRIX COMPLICATE THE DENSIFICATION PROCESS. WITH THE APPLICATION OF 50 BAR AR PRESSURE DURING THE FINAL SINTERING STEP AT A TEMPERATURE OF 1700 DEGREE C THE DENSITY OF THE SAMPLES COULD BE INCREASED BY 3-5%. INVESTIGATION OF THE TRIBOLOGICAL PROPERTIES AGAINST STEEL AS A COUNTERBODY UNDER UNLUBRICATED OSCILLATING SLIDING CONDITIONS SHOWED A HIGH COEFFICIENT OF FRICTION AND AN INCREASING WEAR RATE UP TO A SICP CONTENT OF 10 VOL. % . AT 15 AND 20 VOL. % SICP RESP. BOTH THE COEFFICIENT OF FRICTION AND THE COEFFICIENT OF WEAR DROP DOWN. T2 - 3rd IUMRS International Conference on Advanced Materials (ICAM) CY - Tokyo, Japan DA - 1993-08-31 PY - 1994 SN - 0-444-81993-2 N1 - Serientitel: Transactions of the Materials Research Society of Japan – Series title: Transactions of the Materials Research Society of Japan IS - 16B SP - 791 EP - 794 PB - Elsevier CY - Amsterdam AN - OPUS4-1433 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Steinborn, Gabriele T1 - Characterisation of the secondary properties of alumina - measuring the isoelectric point by a streaming potential method PY - 1997 SN - 0173-9913 SN - 0196-6219 VL - 74 IS - 5 SP - 235 EP - 239 PB - Göller CY - Baden-Baden AN - OPUS4-1434 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Steinborn, Gabriele T1 - Influence of Slip Viscosity on the Mechanical Properties of High Purity Alumina made by Gelcasting KW - High purity alumina KW - Gelcasting KW - Solid content KW - Viscosity KW - Deairing KW - Bending strenght KW - Microstructure KW - Computertomography KW - Defect type PY - 1997 SN - 1013-9826 VL - 132 SP - 374 EP - 377 PB - Trans Tech Publ. CY - Aedermannsdorf AN - OPUS4-1435 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Abe, H. A1 - Naito, M. A1 - Hackley, V. A1 - Hotta, Y. T1 - Influence of particle size and solid loading on the determination of the isoelectric point (IEP) of ceramics powders by different methods N2 - The isoelectric point is a material property for the characterization of acid-base behavior of the powder surface. The IEP of two alumina powders (AKP-30, Grade A) with different particle size characteristics in aqueous suspension has been determined by colloid vibration current (CVI) and particle charge detection (PCD) methods in moderately concentrated suspensions in order to qualify these methods for a future standardization. The solid loading of the suspensions were 1 and 5 vol%. The comparison of the IEP determined by PCD and CVI was in good agreement. However, the solid loading dependence of IEP and a large IEP hysteresis (at 1 vol%) were observed, which do not allow a proper determination of the IEP. The recording of the potential curve and therfore the determination of the IEP with CVI was difficult for the suspension of Grade A powder due to formation of agglomerates at pH values near the pHIEP. T2 - 7th Euro Ceramics - Conference and Exhibition of the European Ceramic Society (ECerS) CY - Brugge, Belgium DA - 2001-09-09 KW - Isoelectric point (IEP) KW - Alumina powder KW - Particle charge detection (PCD) KW - Colloid vibration current (CVI) PY - 2002 UR - http://ois.nist.gov/nistpubs/technipubs/recent/search.cfm?dbibid=9289 DO - https://doi.org/10.4028/www.scientific.net/KEM.206-213.3 SN - 1013-9826 VL - 206-213 SP - 3 EP - 6 PB - Trans Tech Publ. CY - Aedermannsdorf AN - OPUS4-1437 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Yarim, Rasim A1 - Wäsche, Rolf A1 - Woydt, Mathias ED - Franek, F. T1 - Wear Behaviour of SiC-TiC-TiB2 Ceramic Composites Sliding against SiC up to 800°C and 2m/s T2 - 2nd World Tribology Congress ; 2nd WTC 2001 CY - Vienna, Austria DA - 2001-09-03 KW - Dry sliding KW - Tribochemistry KW - Silicon carbide KW - Titanium carbide KW - Titanium boride KW - High temperature KW - Ceramic composites PY - 2001 SN - 3-901657-07-X SP - 1(?) EP - 4(?) PB - ÖTG CY - Wien AN - OPUS4-1438 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Wäsche, Rolf A1 - Klaffke, Dieter ED - Andersson, P. T1 - Tribological Behaviour of Multiphase Ceramic Composites in the System Si-Ti-B-C Containing Free Carbon T2 - 9th Nordic Symposium on Tribology ; 9th NORDTRIB 2000 CY - Porvoo, Finland DA - 2000-06-11 PY - 2000 SN - 951-38-5276-8 SN - 0357-9387 N1 - Serientitel: VTT Symposium – Series title: VTT Symposium VL - 1 IS - 200 SP - 186 EP - 195 PB - VTT, Technical Research Centre of Finland CY - Espoo AN - OPUS4-1439 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Klaffke, Dieter T1 - Ceramic particulate composites in the system SiC-TiC-TiB2 sliding against SiC and Al2O3 under water N2 - The tribological behaviour of SiC, SiC-TiC and SiC-TiC-TiB2 was determined in oscillating sliding against SiC and -Al2O3 in water at room temperature. The tribo-systems with the composite materials containing TiC and TiB2 differ significantly from the systems with the single phase SiC: The wear is reduced and the friction is increased. The wear reduction up to a factor of 10 is mainly due to the formation of an oxide film containing titanium oxides which is soft, stable in water and well adhering to the bulk material. This oxide film is transferred to the alumina ball but not to the silicon carbide ball. KW - Silicon carbide KW - Titanium carbide KW - Titanium boride KW - Ceramic KW - Particulate composites KW - Oscillating sliding KW - Water lubrication KW - Friction KW - Wear PY - 1999 DO - https://doi.org/10.1016/S0301-679X(99)00033-X SN - 0301-679X VL - 32 IS - 4 SP - 197 EP - 206 PB - Butterworth-Heinemann CY - Oxford AN - OPUS4-1440 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Naito, M. ED - Puri, V. ED - Adair, J. ED - Knobloch, C. ED - Huang, C. T1 - Electrokinetic Characterization of Aqueous Ceramic Suspensions T2 - Fine Powder Processing Conference '99 CY - State University, PA, USA DA - 1999-09-20 KW - Meßverfahren KW - Zeta Potenzial KW - Hochleistungskeramik PY - 1999 SP - 177 EP - 183 AN - OPUS4-1441 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Steinborn, Gabriele A1 - Wäsche, Rolf A1 - Reichel, U. T1 - Fabrication of porous ceramics made from nano sized alumina powder by gelcasting N2 - The gelcasting process was used for manufacturing porous ceramic bodies from nano sized powders. 3 different powders with specific surface areas between 12 and 30 m²/g were used. Solid content of the corresponding slurries was dependent on the milling procedure and the use of a suitable dispersant. For bimodal GradeA powder solid content was as high as 58 vol%. For sintering temperatures between 1250 and 1600°C the porosity varied between 45 and 20%, whereas the pore radii varied between 50 and 91nm. The grain size of crystallites in the sintered microstructures was about 1um. The reflection ratio for visible light increased in comparison to a reference sample made from conventional powder from 0.8 to 0.95 in the wavelenght range around 400nm. T2 - 2nd International Conference on Shaping of Advanced Ceramics CY - Gent, Belgium DA - 2002-10-24 PY - 2002 SP - 103 EP - 108 AN - OPUS4-1813 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Klaffke, Dieter A1 - Wäsche, Rolf A1 - Yarim, Rasim T1 - Tribological Behaviour of SiC-TiC-TiB2 Composites under Unlubricated Sliding Conditions KW - Silicon carbide KW - Titanium carbide KW - Titanium diboride KW - Alumina KW - Oscillating sliding KW - Relative humidity PY - 2003 SN - 1354-4063 SN - 1557-685X VL - 9-3 IS - 9 SP - 185 EP - 195 PB - Coppin CY - Deal AN - OPUS4-2486 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Klaffke, Dieter A1 - Troczynski, T. T1 - Tribological performance of SiC and TiB2 against SiC and Al2O3 at low sliding speeds N2 - The friction and wear behaviour of a new developed, pressureless sintered TiB2 ceramic was studied in comparison to SiC against SiC and Al2O3 balls under unlubricated conditions at room temperature. Special attention was paid to the influence of relative humidity on friction and wear results. For both ceramics the coefficient of friction against both ball materials decreases with increasing humidity and is higher in tests against alumina than against SiC. The wear rate is affected significantly by humidity and decreases by one order of magnitude for Al2O3/SiC system and by 2 orders of magnitude for SiC/SiC system. For TiB2 wear rates are nearly not affected by humidity against both ball materials and are much smaller than for SiC. KW - Titanium diboride KW - Friction KW - Wear KW - Relative humidity KW - Counter body material PY - 2004 DO - https://doi.org/10.1016/S0043-1648(03)00444-7 SN - 0043-1648 VL - 256 SP - 695 EP - 704 PB - Elsevier CY - Amsterdam AN - OPUS4-3481 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Klaffke, Dieter A1 - Steinborn, Gabriele A1 - Wäsche, Rolf A1 - Wötting, G. ED - Degischer, H.-P. T1 - Tribologische Untersuchungen an SiC- und Si3N4-basierten Keramiken T2 - 14. Symposium Verbundwerkstoffe und Werkstoffverbunde CY - Wien, Österreich DA - 2003-07-02 PY - 2003 SN - 3-527-30762-1 SP - 545 EP - 550 PB - Wiley-VCH CY - Weinheim AN - OPUS4-2591 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Klaffke, Dieter A1 - Yarim, Rasim A1 - Wäsche, Rolf T1 - Effect of Pre-oxidation on Friction and Wear Behaviour of a SiC-TiC-TiB2 composite PY - 2003 VL - 22 SP - 12 EP - 20 PB - Metallilaboratorio CY - Espoo AN - OPUS4-2517 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Klaffke, Dieter A1 - Yarim, Rasim A1 - Wäsche, Rolf T1 - Einfluss einer Voroxidation auf das tribologische Verhalten keramischer Komposits KW - SiC KW - TiC KW - TiB2 KW - Kompositkeramik KW - Reibung KW - Schwingungsverschleiß KW - Randzone KW - Luftfeuchte PY - 2003 SN - 0724-3472 VL - 50 IS - 2 SP - 34 EP - 39 PB - Expert Verlag CY - Renningen AN - OPUS4-2536 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Wäsche, Rolf A1 - Yarim, Rasim A1 - Klaffke, Dieter A1 - Hartelt, Manfred ED - Bartz, Wilfried J. T1 - Oscillating Sliding Wear Behaviour of SiC, TiC, TiB2, 59SiC-41TiB2 and 52SiC-24TiC-24TiB2 Materials up to 750°C in Air T2 - 14th International Colloquium Tribology, Tribology and Lubrication Engineering CY - Stuttgart, Deutschland DA - 2004-01-13 PY - 2004 SN - 3-924813-54-X VL - II SP - 1039 EP - 1045 PB - Techn. Akad. Esslingen CY - Ostfildern AN - OPUS4-3057 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Klaffke, Dieter A1 - Wäsche, Rolf A1 - Wötting, G. ED - Bartz, Wilfried J. T1 - Tribological Characterisation of a Sl3N4-TiN Composite Ceramic in Fretting Tests at Room Temperature T2 - 14th International Colloquium Tribology, Tribology and Lubrication Engineering CY - Stuttgart, Germany DA - 2004-01-13 PY - 2004 SN - 3-924813-54-X VL - III SP - 1413 EP - 1420 PB - Techn. Akad. Esslingen CY - Ostfildern AN - OPUS4-3058 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Klaffke, Dieter A1 - Wäsche, Rolf A1 - Aldinger, F. A1 - Janakiraman, N. ED - Bartz, Wilfried J. T1 - Tribological investigations on siliconcarbonitride ceramics derived from preceramic polymers T2 - 14th International Colloquium Tribology, Tribology and Lubrication Engineering CY - Stuttgart, Deutschland DA - 2004-01-13 PY - 2004 SN - 3-924813-54-X VL - 3 SP - 1403 EP - 1412 PB - Techn. Akad. Esslingen CY - Ostfildern AN - OPUS4-3059 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Klaffke, Dieter A1 - Yarim, Rasim A1 - Santner, Erich T1 - Tribological Tayloring of Ceramic Composites N2 - With respect to their excellent material properties ceramics are of interest as candidate materials for tribological applications. The friction and wear behaviour of ceramics is often superior to that of metallic materials. Furthermore, an essential improvement of tribological performance will be possible by tailoring of ceramics in the process of powder preparation and sintering technique. Silicon Carbide (SiC) shows interesting friction and wear behaviour at room temperature, even under unlubricated running conditions but is very sensitive against effects of environmental humidity and shows high friction and high wear in the absence of water vapour. The tribological performance of SiC can be improved considerably by adding substantial amounts of TiC and TiB2 to the microstructure thus creating ceramic particulate composite materials. Various composites in the quasi ternary system SiC-TiC-TiB2 were prepared by a ceramic manufacturing process including sintering temperatures up to 2180 °C. Comparative tribo tests were performed under unlubricated oscillating sliding motion in dry, normal, and moist air and under water lubrication with SiC balls and Al2O3 balls as counter bodies. The friction is affected by the relative humidity (RH) but barely at all by the composition of the composites. The wear resistance of the composites was found to be improved considerably by addition of TiB2 in the range from 20 to 60 %. The highest wear resistance of the system wear was found when Al2O3 was used as counter body material. PY - 2003 DO - https://doi.org/10.1002/mawe.200300688 SN - 0933-5137 SN - 1521-4052 VL - 34 IS - 10/11 SP - 1008 EP - 1013 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-3132 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Yarim, Rasim A1 - Klaffke, Dieter A1 - Hartelt, Manfred T1 - Oscillating Sliding Wear Behaviour of SiC, TiC, TiB2, 59SiC-41TiB2 and 52SiC-24TiC-24TiB2 Materials up to 750°C in Air T2 - 14th International Colloquium Tribology, Tribology and Lubrication Engineering CY - Ostfildern, Germany DA - 2004-01-13 PY - 2004 AN - OPUS4-3076 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Klaffke, Dieter T1 - High temperature tribological behaviour of particulate composites in the system SiC-TiC-TiB2 during dry oscillating sliding KW - Ceramic Composites KW - High temperatures KW - Tribo-oxidation KW - Dry-slidins KW - Friction KW - Wear PY - 1999 SN - 1225-9381 VL - 5 IS - 2 SP - 155 EP - 161 PB - Han'guk-Seramik-Hakhoe CY - Seoul AN - OPUS4-761 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Klaffke, Dieter A1 - Wäsche, Rolf ED - Franek, F. T1 - Friction and wear behaviour of ceramic SiC-TiC-TiB2 composites under unlubricated oscillating sliding conditions T2 - 2nd World Tribology Congress ; 2nd WTC 2001 CY - Vienna, Austria DA - 2001-09-03 KW - Silicon carbide KW - Titanium carbide KW - Titanium diboride KW - Alumina KW - Oscillating sliding KW - Humidity PY - 2001 SN - 3-901657-07-X SP - 140 PB - ÖTG CY - Wien AN - OPUS4-1172 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hackley, V.A. A1 - Patton, J. A1 - Lum, L.-S. H. A1 - Wäsche, Rolf A1 - Naito, M. A1 - Abe, H. A1 - Hotta, Y. A1 - Pendse, H. T1 - Analysis of the isoelectric point in moderately concentrated Alumina suspensions using electroacoustic and streaming potential methods PY - 2002 SN - 0193-2691 SN - 1532-2351 VL - 23 IS - 5 SP - 601 EP - 617 PB - Dekker CY - New York, NY AN - OPUS4-2080 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Klaffke, Dieter A1 - Wäsche, Rolf ED - Schulte, K. ED - Kainer, K. T1 - Tribologische Prüfungen als begleitende Maßnahme zur Entwicklung von keramischen Tribowerkstoffen T2 - 12. Tagung "Verbundwerkstoffe und Werkstoffverbunde" CY - Hamburg, Deutschland DA - 1999-10-05 KW - Tribologie KW - Reibung KW - Verschleiß PY - 1999 SN - 3-527-29967-X SP - 423 EP - 428 PB - Wiley-VCH CY - Weinheim AN - OPUS4-723 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Klaffke, Dieter A1 - Wäsche, Rolf T1 - Friction and wear testing can steer the development of ceramic tribo materials T2 - 2nd World Tribology Congress ; 2nd WTC 2001 CY - Vienna, Austria DA - 2001-09-03 KW - Friction KW - Wear quantities KW - Humidity KW - Ball-on-disk KW - Wear particles PY - 2001 SN - 3-901657-09-6 SP - 141 PB - ÖTG CY - Vienna AN - OPUS4-1152 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klaffke, Dieter A1 - Wäsche, Rolf T1 - Tribological Performance of SiC and TiB2 sliding against SiC and Al2O3 T2 - 10th Nordic Symposium on Tribology ; 10th Nordtrib 2002 CY - Stockholm, Sweden DA - 2002-06-09 PY - 2002 SP - 1(?) EP - 10(?) PB - Royal Institute of Technology CY - Stockholm AN - OPUS4-1386 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Klaffke, Dieter A1 - Yarim, Rasim A1 - Wäsche, Rolf T1 - Effect of pre-oxidation on friction and wear behaviour of a SiC-TiC-TiB2 composite T2 - 10th Nordic Symposium on Tribology ; 10th Nordtrib 2002 CY - Stockholm, Sweden DA - 2002-06-09 PY - 2002 SP - 1 EP - 10(?) PB - Royal Institute of Technology CY - Stockholm AN - OPUS4-1387 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Klaffke, Dieter A1 - Czichos, Horst T1 - Wear behaviour of i-carbon coatings PY - 1992 SN - 0043-1648 VL - 153 SP - 149 EP - 162 PB - Elsevier CY - Amsterdam AN - OPUS4-1428 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Steinborn, Gabriele T1 - Influence of the Dispersants in Gelcasting of Nanosized TiN PY - 1997 SN - 0955-2219 SN - 1873-619X IS - 17 SP - 421 EP - 426 PB - Elsevier CY - Oxford AN - OPUS4-1429 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Naito, M. A1 - Hackley, V.A. T1 - Experimental study on zeta potential and streaming potential of advanced ceramic powders N2 - Zeta potential as measured with the electrokinetic sonic amplitude (ESA) method has been compared to streaming potential as measured with the particle charge detection (PCD) method. The measurements have been carried out on identical suspensions of a-Al2O3, SiC and Si3N4 with a solids volume fraction of 1% and 10%. Zeta potential and streaming potential are related by a linear function. The correlation coefficients for this relationship are better than 0.99 for the suspensions with 1% solids loading. For the suspensions with 10% solids loading, correlation coefficients are slightly lower due to the influence of increasing viscosity. Regardless of lower correlation at the higher solids loading, the isoelectric pH is constant within the limits of accuracy of the pH measurements. KW - Zeta potential KW - Streaming potential KW - Ceramic powders KW - Correlation of measurement PY - 2002 DO - https://doi.org/10.1016/S0032-5910(01)00462-4 SN - 0032-5910 SN - 1873-328X VL - 123 SP - 275 EP - 281 PB - Elsevier CY - Amsterdam AN - OPUS4-1430 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf T1 - Keramische Supraleiter - Kristallstruktur, Gefüge und Eigenschaften PY - 1988 SN - 0340-7551 VL - 18 IS - 2 SP - 128 EP - 133 PB - Bundesanstalt für Materialprüfung CY - Berlin AN - OPUS4-1431 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Wäsche, Rolf A1 - Klaffke, Dieter A1 - Skopp, André ED - Bartz, Wilfried J. T1 - Tribological behaviour of silicon nitride with boron nitride as a solid lubricant PY - 1992 SN - 3-924813-28-0 N1 - Serientitel: Internationales Kolloquium / Technische Akademie Esslingen – Series title: Internationales Kolloquium / Technische Akademie Esslingen IS - 8 SP - 10.2-1 - 10.2-10 PB - Techn. Akad. Esslingen CY - Ostfildern AN - OPUS4-2406 LA - eng 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 - 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 - 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 - CONF A1 - Wäsche, Rolf A1 - Yarim, Rasim A1 - Klaffke, Dieter A1 - Hartelt, Manfred T1 - Oscicalling sliding wear behaviour of SiC, TiC, TiB2 59SiC-41TiB2 and 52SiC-24TiC-24TiB2 T2 - 14th International Colloquium Tribology CY - Ostfildern, Germany DA - 2004-01-13 PY - 2004 AN - OPUS4-11062 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Klaffke, Dieter A1 - Woydt, Mathias A1 - Dörfel, Ilona T1 - Interface formation by tribo-oxidation in SiC based ceramics T2 - AIST-BAM Symposium on Materials Surface Technology in Twin Institute Programme CY - Tsukuba, Japan DA - 2003-02-18 PY - 2003 SP - 1 EP - 4 AN - OPUS4-12051 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Klaffke, Dieter A1 - Woydt, Mathias A1 - Dörfel, Ilona T1 - Structure of the interface in SiC-based ceramic composites formed by tribo-oxidation under dry sliding conditions PY - 2004 SN - 1042-1122 VL - 146 SP - 401 EP - 407 PB - American Ceramic Society CY - Westerville, Ohio AN - OPUS4-12053 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Wäsche, Rolf A1 - Yarim, Rasim A1 - Nicolaides, Dagmar T1 - Influence of Green Compaction on the Sintering Behaviour of SiC-TiC-TiB2 Composites KW - Pressureless sintering KW - SiC KW - TiC KW - TiB2 KW - Green compaction KW - Particle size KW - Microstructure PY - 2004 SN - 1013-9826 VL - 264-268 SP - 213 EP - 218 PB - Trans Tech Publ. CY - Aedermannsdorf AN - OPUS4-12054 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Yarim, Rasim A1 - Wäsche, Rolf A1 - Woydt, Mathias A1 - Dörfel, Ilona T1 - Analysis of wear protecting oxide layers in the system SiC-TiC-TiB2 formed in-situ at high temperatures T2 - AIST-BAM Symposium on Materials Surface Technology in Twin Institute Programme CY - Tsukuba, Japan DA - 2003-02-18 PY - 2003 SP - 5 EP - 8 AN - OPUS4-12057 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Klaffke, Dieter A1 - Wäsche, Rolf A1 - Janakiraman, N. A1 - Aldinger, F. T1 - Tribological characterisation of siliconcarbonitride ceramics derived from preceramic polymers N2 - Amorphous SiCN ceramics were prepared in a laboratory scale as disk shaped specimens with 10 mm diameter and 0.3 mm thickness. The friction and wear behaviour was characterised in gross slip fretting tests under unlubricated conditions at room temperature against steel (100Cr6) and ceramic (Al2O3). Tests with a ball-on-disk contact were performed in laboratory air with different content of water vapour. The results show clearly that the relative humidity has a significant effect on friction and wear behaviour. All tests in dry air lead to higher friction and higher wear rate than in normal air. Improved friction and wear behaviour was observed with increasing pyrolysis temperature up to 1100 °C of the SiCN specimens. This is attributed to increasingly better mechanical properties and higher stiffness of the amorphous network due to the evaporation of gaseous organic species and the formation of free graphite like carbon. KW - Ceramics KW - Preceramic polymer KW - Siliconcarbonitride KW - Friction KW - Wear PY - 2006 DO - https://doi.org/10.1016/j.wear.2005.04.031 SN - 0043-1648 VL - 260 IS - 7-8 SP - 711 EP - 719 PB - Elsevier CY - Amsterdam AN - OPUS4-12302 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Klaffke, Dieter A1 - Woydt, Mathias A1 - Dörfel, Ilona T1 - Structure of interface in SiC - based composites formed by tribo-oxidation under dry sliding conditions T2 - International Conference on the Characterization and Control of Interfaces for High Quality Advanced Materials (ICCCI 2003) CY - Kurashiki, Japan DA - 2003-09-24 PY - 2003 AN - OPUS4-4304 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Klaffke, Dieter A1 - Woydt, Mathias A1 - Dörfel, Ilona T1 - Interface formation in SiC based composites T2 - AIST-BAM Symposium on Material Surface Technology in TWIN Institute Programme CY - Tsukuba, Japan DA - 2003-02-18 PY - 2003 AN - OPUS4-4305 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Yarim, Rasim T1 - Gas pressure sintering of SiC-TiC-TiB2 ceramic composites T2 - 8. ECerS Conference of the European Ceramic Society CY - Istanbul, Turkey DA - 2003-06-29 PY - 2003 AN - OPUS4-5354 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Göbel, Thomas T1 - Laser induced thermal shock testing on Si3N4 GS44 and alumina Heratape T2 - Research and Development on Advanced Materials for Transportation Applications CY - Oakland, CA, USA DA - 2003-10-22 PY - 2003 AN - OPUS4-5361 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Göbel, Thomas T1 - Werkstoffe der hochleistungskeramik - Herstellung und Charakterisierung an der BAM T2 - Seminar für Werkstofftechnik im FB 15 der Universität Kassel CY - Kassel, Germany DA - 2003-11-17 PY - 2003 AN - OPUS4-5362 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Procop, Mathias A1 - Hübner, Wolfgang A1 - Wäsche, Rolf A1 - Nieland, S. A1 - Ehrmann, O. T1 - Fast Elemental Mapping in Materials Science KW - Electron probe microanalysis KW - EPMA KW - Energy dispersive X-ray spectroscopy KW - EDS KW - Elemental mapping PY - 2002 UR - http://www.microscopy-analysis.com/sites/default/files/magazine_pdfs/mag%20179_2002_Jan_Procop_1.pdf SN - 0958-1952 IS - January SP - 5 EP - 6 PB - Rolston Gordon Comm. CY - Bookham, Surrey AN - OPUS4-7091 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Steinborn, Gabriele A1 - Nitsche, R. T1 - Dispersion and Characterisation of Nanoscale Particle Suspensions T2 - International Symposium on Smart Processing Technology (ISMPT) CY - Osaka, Japan DA - 2005-11-14 PY - 2005 AN - OPUS4-11828 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Klaffke, Dieter A1 - Janakiraman, N. A1 - Aldinger, F. T1 - Tribological investigations on siliconcarbonitride ceramics derived from preceramic T2 - 14th International Colloquium Tribology CY - Ostfildern, Germany DA - 2004-01-13 PY - 2004 AN - OPUS4-11057 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Hartelt, Manfred A1 - Wäsche, Rolf T1 - Verschleißuntersuchungen an Dental-Implantat-Werkstoffen unter partial slip Bedingungen KW - Modellsystem KW - Partial slip KW - Fretting regime KW - Implantat KW - Titan PY - 2012 SN - 0724-3472 VL - 59 IS - 3 SP - 18 EP - 23 PB - Expert Verlag CY - Renningen AN - OPUS4-26003 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wäsche, Rolf A1 - Czichholz, G. A1 - Steinborn, Gabriele T1 - Wear behaviour of yttrium titanate ceramics under gross slip fretting conditions T2 - Int. Conf. Nordic Countries (NordTrib 2012) CY - Trondheim, Norway DA - 2012-06-12 PY - 2012 AN - OPUS4-26014 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Podgursky, V. A1 - Adoberg, E. A1 - Surzenkov, A. A1 - Kimmari, E. A1 - Viljus, M. A1 - Mikli, V. A1 - Hartelt, Manfred A1 - Wäsche, Rolf A1 - Síma, M. A1 - Kulu, P. T1 - Dependence of the friction coefficient on roughness parameters during early stage fretting of (Al,Ti)N coated surfaces N2 - Main focus was on the correlation of the coefficient of friction (COF) with the geometrical parameters of the surface during early stage of the running-in period. TiN, TiAlN and AlTiN coatings were prepared by using rotating cathode arc evaporation unit. The roughness of the WC-Co substrate Ra ranged from 0.05 to 0.2 µm and the coating thickness was 2.3 ± 0.2 µm. Part of the samples were subjected to the surface modification by the drag grinding finishing. Geometrical parameters of the surface were evaluated by means of atomic force microscopy (AFM) and fretting tests were conducted with 10 mm diameter alumina ball under 2 N load, 100 µm slip distance and the frequency of 10 Hz. It was found that the distribution of macroparticles strongly influences the geometrical parameters of the surface and the number of macroparticles increases with increasing Al content in the coating. In the case of the positive skewness Ssq of the coating surface, the kurtosis Sku provides a statistically significant effect on the COF, namely the COF depends inversely on the kurtosis Sku. The kurtosis value for TiN was the highest among as-deposited coatings, subsequently, the slowest increase rate in the COF was observed for the TiN coating. KW - PVD coatings KW - AFM KW - Surface topography KW - COF PY - 2011 DO - https://doi.org/10.1016/j.wear.2011.03.006 SN - 0043-1648 VL - 271 IS - 5-6 SP - 853 EP - 858 PB - Elsevier CY - Amsterdam AN - OPUS4-24497 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -