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Autor

  • Ehrke, Roman (5)
  • Wäsche, Rolf (5)
  • Woydt, Mathias (3)
  • Brandt, Guido (2)
  • Hartelt, Manfred (2)
  • Sasaki, S. (2)
  • Nolze, Gert (1)
  • Schmid, Thomas (1)
  • Yano, S. (1)

Erscheinungsjahr

  • 2018 (2)
  • 2017 (1)
  • 2015 (2)

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  • Beitrag zu einem Tagungsband (4)
  • Zeitschriftenartikel (1)

Referierte Publikation

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Schlagworte

  • Temperature (4)
  • Wear (4)
  • Friction (3)
  • Ceramics (2)
  • Diamond like carbon (2)
  • Hot steam (2)
  • Abrasion (1)
  • Alumina (1)
  • Aluminium oxide (1)
  • Apha-alumina (1)
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Organisationseinheit der BAM

  • 9 Komponentensicherheit (5)
  • 9.5 Tribologie und Verschleißschutz (5)
  • 1 Analytische Chemie; Referenzmaterialien (1)
  • 1.4 Prozessanalytik (1)

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A study on tribological behaviour of a-C:H coatings under lubricated conditions up to 250 °C (2015)
Wäsche, Rolf ; Hartelt, Manfred ; Ehrke, Roman
The influence of temperature and counterbody material on the tribological properties of a-C:H coatings deposited on Cronidur 30 steel has been investigated in a lubricated ball on disk contact situation. The results show, that the wear volumes of the system increase exponentially with increasing temperature. Two different wear mechanisms seem to have a major influence: First, the abrasive action due to materials hardness and second, the tribooxidation when silicon nitride is counter material.
Wear behaviour of alpha-alumina in hot steam at high contact pressure (2018)
Wäsche, Rolf ; Brandt, Guido ; Ehrke, Roman ; Nolze, Gert ; Schmid, Thomas ; Sasaki, S. ; Woydt, Mathias
The work examines the wear behaviour of α-aluminium oxide by combining thermodynamic modelling with advanced wear testing as well as analytical methods to get a better understanding of this structural ceramic material wear behavior and its possible use in high temperature steam environment.
Wear of alpha-alumina in hot steam up to 300°C (2017)
Wäsche, Rolf ; Ehrke, Roman ; Woydt, Mathias
Selfmated alpha-alumina sliding couples have been investigated under oscillating sliding at 100 N load in different humidity conditions in air as in hot steam up to temperatures of 300°C and ambient pressures up to 4 bar.
Tribology in hot steam for energy recovery (2018)
Woydt, Mathias ; Wäsche, Rolf ; Brandt, Guido ; Ehrke, Roman ; Yano, S. ; Sasaki, S.
The wear rates of self-mated alumina couples show that friction as well as wear is largely determined by the above-mentioned hydro-thermal conditions. The presence of water and its amount available in the surrounding system either in liquid or in gaseous form plays a key role for friction and wear behavior and can be beneficial for the tribological profile of steam degradation resistant materials. Hot steam enhances the tribo-chemical formations of oxides and hydroxides on MgO-ZrO2 alumina and antimony impregnated carbon.
A study on tribological behaviour of a-C:H coatings under lubricated conditions up to 250°C (2015)
Wäsche, Rolf ; Hartelt, Manfred ; Ehrke, Roman
The influence of temperature and counterbody material on the tribological properties of a-C:H coatings deposited on Cronidur 30 steel has been investigated in a lubricated ball on disk contact situation with alpha-alumina and silicon nitride as counterbodies. The results show, that the wear volumes of the systems increase exponentially with increasing temperature, for alpha-alumina more than for silicon nitride. Two different wear mechanisms seem to have a major influence: First, the abrasive action due to materials hardness and second, the tribo-oxidation when silicon nitride is counter material.
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