| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Schneider, Johannes
Karlsruhe Institute of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (48/48 displayed)
- 2024Enhancing Supercapacitor Electrochemical Performance with 3D Printed Cellular PEEK/MWCNT Electrodes Coated with PEDOT: PSS
- 2024Enhancing Supercapacitor Electrochemical Performance with 3D Printed Cellular PEEK/MWCNT Electrodes Coated with PEDOT: PSScitations
- 2023Waviness Affects Friction and Abrasive Wear
- 2022Piezoresistive sensing performance of multifunctional MWCNT/HDPE auxetic structures enabled by additive manufacturingcitations
- 2022Multifunctionality of nanoengineered self-sensing lattices enabled by additive manufacturingcitations
- 2022Tribological mechanisms of slurry abrasive wearcitations
- 2022Wear Study of a Magnetron-Sputtered TiC/a-C Nanocomposite Coating under Media-Lubricated Oscillating Sliding Conditionscitations
- 2021Energy absorption characteristics of additively manufactured plate-lattices under low- velocity impact loadingcitations
- 2020Surface engineering of a titanium alloy for tribological applications by nanosecond-pulsed lasercitations
- 2020Cortical thinning and accumulation of large cortical pores in the tibia reflect local structural deterioration of the femoral neckcitations
- 2020Experimental Analysis of microstructured steel surfaces for wet tribological applications in the low velocity regime
- 2020Influence of interstitial oxygen on the tribology of Ti6Al4Vcitations
- 201915: Werkstoffkunde II,Vorlesung, SS 2019, 27.06.2019
- 201916: Werkstoffkunde II,Vorlesung, SS 2019, 01.07.2019
- 201911: Lasereinsatz im Automobilbau, Vorlesung, SS 2019, 11.07.2019
- 2019Large cortical bone pores in the tibia are associated with proximal femur strengthcitations
- 201918: Werkstoffkunde 1, Vorlesung, WS 2018/19, 11.01.2019
- 201913: Werkstoffkunde II, Vorlesung, SS 2019, 24.06.2019
- 201912: Werkstoffkunde II, Vorlesung, SS 2019, 17.06.2019
- 201908: Werkstoffkunde II, Vorlesung, SS 2019, 23.05.2019
- 201919: Werkstoffkunde 1, Vorlesung, WS 2018/19, 15.01.2019
- 201911: Werkstoffkunde II, Vorlesung, SS 2019, 06.06.2019
- 201817: Werkstoffkunde 2, Vorlesung, SS 2018, 14.06.2018
- 201812: Werkstoffkunde 2, Vorlesung, SS2018, 04.06.2018
- 201814: Werkstoffkunde 2, Vorlesung, SS 2018, 07.06.2018
- 201815: Werkstoffkunde 2, Vorlesung, SS 2018, 11.06.2018
- 201813: Werkstoffkunde 1, Vorlesung, WS 2018/19, 07.12.2018
- 201812: Lasereinsatz im Automobilbau, Vorlesung, SS2018, 09.07.2018
- 201805: Werkstoffkunde 2, Vorlesung, SS 2018, 07.05.2018
- 2018Composition of ice particle residuals in mixed-phase clouds at Jungfraujoch (Switzerland): enrichment and depletion of particle groups relative to total aerosolcitations
- 201818: Werkstoffkunde 2, Vorlesung, SS 2018, 18.06.2018
- 201819: Werkstoffkunde 2, Vorlesung, SS 2018, 21.06.2018
- 201717: Werkstoffkunde 1, Vorlesung, WS 2017/18, 19.12.2017
- 201716: Werkstoffkunde 1, Vorlesung, WS 2017/18, 15.12.2017
- 201718: Werkstoffkunde 1, Vorlesung, WS 2017/18, 22.12.2017
- 2017Microstructure, mechanical properties and friction behavior of magnetron-sputtered V-C coatingscitations
- 2016Hydration of magnesia cubes: a helium ion microscopy study
- 2016Chronology of the microstructure evolution for pearlitic steel under unidirectional tribological loadingcitations
- 2013Microstructure, mechanical and friction behavior of magnetronsputtered VC coatings
- 2013Entwicklung und tribologische Charakterisierung von TiC/a-C-Nanokompositen im Hinblick auf den Einsatz in mangelgeschmierten Gleitkontakten
- 2008Laser-supported surface modification of alumina ceramic with regard to improved tribological properties
- 2008Development of surface-modified alumina ceramic for bearing components in liquid media
- 2008Surface modified alumina ceramic for unlubricated tribological applications
- 2008Multiphase Al2O3 ceramic with high resistance to unlubricated sliding wear
- 2008Improved tribological properties of Al2O3 ceramics due to laser-induced surface alloying
- 2008Friction and wear reduction of Al₂O₃ ceramics by laser-induced surface alloying
- 2007Mechanical and tribological properties of Nd- and Yb-SiAlON composites sintered by hot isostatic pressing
- 2001Thermal and electrical properties of laser-modified ceramics
Places of action
| Organizations | Location | People |
|---|
article
Mechanical and tribological properties of Nd- and Yb-SiAlON composites sintered by hot isostatic pressing
Abstract
Single phase alpha-, beta- and two phases alpha/beta-sialon compositeswere sintered with both Nd2O3 and Yb2O3 by hot isostatic pressing(HIP). The mechanical and tribological properties of these compositeceramics have been investigated with respect to their application indirect fuel injection pumps for gasoline engines. Scanning electronmicroscopy (SEM) was used to analyse the fracture surfaces of sialonsfollowing sintering and their worn surfaces after the tribologicaltests. Microstructural evolution and its change with composition aswell as the influence of the microstructural changes on the mechanicaland tribological properties have been reported. It has been found thatincreasing alpha-sialon phase fraction of the Nd-sialons increases thehardness due to the harder nature of this phase, whereas no significantchange in the indentation fracture toughness was observed. IncreasingNd content in these sialons resulted in no significant change in bothof the hardness and fracture toughness values. On the other hand,single phase Yb-alpha-sialons showed a slight decrease in the hardnessand a gradual increase in the fracture toughness with increasing Ybcontent. In a comparative way, it can be seen that Yb-doping givesslightly higher hardness and toughness than Nd-doping. This has beenexplained by the difference between the cationic radii of Nd3+ and Yb3+and the corresponding ionic field strength. Increased ionic fieldstrength of the Yb3+ in Yb-sialons resulted in an improvement in theirmechanical properties. Tribological tests were performed using alaboratory tribometer with ball-on-plate geometry in reciprocatingsliding contact under lubrication with isooctane. Based on the frictionand wear data, a relative ranking of the different wear pairs of Nd-and Yb-sialon plates together with a commercial Si3N4 plate (used as areference material) against Si3N4 ball was established. Sliding pairsof Yb-doped alpha-sialon ceramics showed higher friction coefficientand lower wear resistance compared to Nd-doped beta- andalpha/beta-sialon composites and the commercial Si3N4 ceramic. Thelowest friction and the highest wear resistance were measured for theNd-doped sialon with an alpha/beta-ratio of 88:12. SEM micrographs ofthe worn surfaces revealed that the main wear mechanisms weremicroabrasion and tribochemical reactions that resulted in theformation of a thin tribolayer composed of compact wear debris in thetribocontact. (c) 2006 Elsevier B.V. All rights reserved.