A. Pauschitz - Academia.edu (original) (raw)
Papers by A. Pauschitz
Bioceramics in Joint Arthroplasty, 2003
World Tribology Congress III, Volume 2, 2005
Tribologia(Poland), 2003
Streszczenie angielskie: Elevated temperature wear behaviour of metallic materials are characteri... more Streszczenie angielskie: Elevated temperature wear behaviour of metallic materials are characterised by formation of several types of layers. Wearing conditions, wearing material and mating material govern formation of these layers. These layers determine the friction ...
Thermal Sprayed Coatings and their Tribological Performances, 2015
Tribology and Interface Engineering Series, 2005
In order to see how oxygen and nitrogen containing substances influence the wear relating behavio... more In order to see how oxygen and nitrogen containing substances influence the wear relating behaviour of diesel fuels various hydroxychinolines were investigated by means of a high frequency reciprocating rig (HFRR) tribometer. Attention was especially given to the connection between the position of the hydroxyl group at the molecule and the resulting influence on the “lubricity” properties of low sulfur diesel fuel.
Wear, 2015
ABSTRACT A quantitative molecular dynamics (MD) study of nanoscopic wear under dry grinding and p... more ABSTRACT A quantitative molecular dynamics (MD) study of nanoscopic wear under dry grinding and polishing conditions with multiple abrasive particles (grits) is presented. The initial topography of the monocrystalline iron surface has a pseudo-random Gaussian height distribution, and the sixteen rigid abrasive grits have cuboid or spherical geometries. The grinding and the polishing process are differentiated via the kinematic constraints imposed on the abrasive grits. A post-processing scheme based on drift velocity analysis dynamically identifies atoms as either part of a wear particle, the substrate, or the sheared zone between the two. The knowledge of each atom's zone affiliation and a time-resolved, mesh-based evaluation of the substrate topography lead to a break-down of the asperity volume reduction into its constituents: pit fill-up volume, individual wear particles, shear zone, and sub-surface substrate compression. It was found that the initial geometric type of the abrasive grits as well as their kinematics strongly influence the quality of the final surface.
ABSTRACT Molecular dynamics (MD) simulations constitute a powerful tool to gain insight into phys... more ABSTRACT Molecular dynamics (MD) simulations constitute a powerful tool to gain insight into physico-chemical lubricant behaviour, plastic substrate deformation and other structural changes in nanotribological junctions. MD operates at resolutions high enough to visualise and analyse these tribologically relevant phenomena sufficiently, yet it is capable of managing systems some orders of magnitude larger than those accessible to parameter-free methods such as density functional theory (DFT).
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2008
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2010
ABSTRACT This paper presents the investigation of effects of phosphorus-containing coatings on th... more ABSTRACT This paper presents the investigation of effects of phosphorus-containing coatings on the friction behaviour. Three types of technologically fabricated coatings are investigated: zinc phosphate, iron phosphate, and a third the composition of which is still confidential as it is being patented. For the description of the composition and the properties of these coatings, scanning electron microscopy, energy dispersive X-ray analysis, and electron backscattered diffraction are used among other methods. Friction behaviour is characterized by a disc-on-disc tribometer, in which coated steel discs rotate against so-called paper friction discs under lubricated conditions. Tests are carried out with two different types of lubricants and at two temperatures. The disc-on-disc tests show the influence of coatings on the level and stability of the coefficient of friction (the occurrence of stick—slip or vibrations). Results show that phosphorus-containing coatings reduce or – in certain cases – even prevent the occurrence of stick—slip. Therefore, one focus of the discussion is the investigation of layers formed during tribological tests. For detailed chemical information of the surface, selected systems are also characterized by X-ray photoelectron spectroscopy. Differences in the chemical state of otherwise equal zinc phosphate coatings can explain differences in the experimental results.
Tribology Series, 2001
ABSTRACT
Fundamentals of Tribology and Bridging the Gap Between the Macro- and Micro/Nanoscales, 2001
Tribology Series, 2003
253 MA alloy and PM 1000 alloy are used for application requiring exposure to high temperature. B... more 253 MA alloy and PM 1000 alloy are used for application requiring exposure to high temperature. Both alloys form Cr 2 O 3 protective layer on exposure to elevated temperature. As these alloys are designed for elevated temperature applications, it is expected that ...
Tribology International, 2010
Tribology and Interface Engineering Series, 2005
Tribology International, 2006
Materials Science Forum, 2005
… -Nanoelectronics, Jan 1, 2006
Bioceramics in Joint Arthroplasty, 2003
World Tribology Congress III, Volume 2, 2005
Tribologia(Poland), 2003
Streszczenie angielskie: Elevated temperature wear behaviour of metallic materials are characteri... more Streszczenie angielskie: Elevated temperature wear behaviour of metallic materials are characterised by formation of several types of layers. Wearing conditions, wearing material and mating material govern formation of these layers. These layers determine the friction ...
Thermal Sprayed Coatings and their Tribological Performances, 2015
Tribology and Interface Engineering Series, 2005
In order to see how oxygen and nitrogen containing substances influence the wear relating behavio... more In order to see how oxygen and nitrogen containing substances influence the wear relating behaviour of diesel fuels various hydroxychinolines were investigated by means of a high frequency reciprocating rig (HFRR) tribometer. Attention was especially given to the connection between the position of the hydroxyl group at the molecule and the resulting influence on the “lubricity” properties of low sulfur diesel fuel.
Wear, 2015
ABSTRACT A quantitative molecular dynamics (MD) study of nanoscopic wear under dry grinding and p... more ABSTRACT A quantitative molecular dynamics (MD) study of nanoscopic wear under dry grinding and polishing conditions with multiple abrasive particles (grits) is presented. The initial topography of the monocrystalline iron surface has a pseudo-random Gaussian height distribution, and the sixteen rigid abrasive grits have cuboid or spherical geometries. The grinding and the polishing process are differentiated via the kinematic constraints imposed on the abrasive grits. A post-processing scheme based on drift velocity analysis dynamically identifies atoms as either part of a wear particle, the substrate, or the sheared zone between the two. The knowledge of each atom's zone affiliation and a time-resolved, mesh-based evaluation of the substrate topography lead to a break-down of the asperity volume reduction into its constituents: pit fill-up volume, individual wear particles, shear zone, and sub-surface substrate compression. It was found that the initial geometric type of the abrasive grits as well as their kinematics strongly influence the quality of the final surface.
ABSTRACT Molecular dynamics (MD) simulations constitute a powerful tool to gain insight into phys... more ABSTRACT Molecular dynamics (MD) simulations constitute a powerful tool to gain insight into physico-chemical lubricant behaviour, plastic substrate deformation and other structural changes in nanotribological junctions. MD operates at resolutions high enough to visualise and analyse these tribologically relevant phenomena sufficiently, yet it is capable of managing systems some orders of magnitude larger than those accessible to parameter-free methods such as density functional theory (DFT).
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2008
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2010
ABSTRACT This paper presents the investigation of effects of phosphorus-containing coatings on th... more ABSTRACT This paper presents the investigation of effects of phosphorus-containing coatings on the friction behaviour. Three types of technologically fabricated coatings are investigated: zinc phosphate, iron phosphate, and a third the composition of which is still confidential as it is being patented. For the description of the composition and the properties of these coatings, scanning electron microscopy, energy dispersive X-ray analysis, and electron backscattered diffraction are used among other methods. Friction behaviour is characterized by a disc-on-disc tribometer, in which coated steel discs rotate against so-called paper friction discs under lubricated conditions. Tests are carried out with two different types of lubricants and at two temperatures. The disc-on-disc tests show the influence of coatings on the level and stability of the coefficient of friction (the occurrence of stick—slip or vibrations). Results show that phosphorus-containing coatings reduce or – in certain cases – even prevent the occurrence of stick—slip. Therefore, one focus of the discussion is the investigation of layers formed during tribological tests. For detailed chemical information of the surface, selected systems are also characterized by X-ray photoelectron spectroscopy. Differences in the chemical state of otherwise equal zinc phosphate coatings can explain differences in the experimental results.
Tribology Series, 2001
ABSTRACT
Fundamentals of Tribology and Bridging the Gap Between the Macro- and Micro/Nanoscales, 2001
Tribology Series, 2003
253 MA alloy and PM 1000 alloy are used for application requiring exposure to high temperature. B... more 253 MA alloy and PM 1000 alloy are used for application requiring exposure to high temperature. Both alloys form Cr 2 O 3 protective layer on exposure to elevated temperature. As these alloys are designed for elevated temperature applications, it is expected that ...
Tribology International, 2010
Tribology and Interface Engineering Series, 2005
Tribology International, 2006
Materials Science Forum, 2005
… -Nanoelectronics, Jan 1, 2006