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Autor

  • Steinborn, Gabriele (1)
  • Wäsche, Rolf (1)

Erscheinungsjahr

  • 2014 (1) (entfernen)

Schlagworte

  • Yttrium titanate (1) (entfernen)

Organisationseinheit der BAM

  • 5.5 Technische Keramik (1) (entfernen)

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Wear behaviour of low IR-emission titanate ceramics under gross slip fretting conditions against steel and alpha-alumina (2014)
Wäsche, Rolf ; Steinborn, Gabriele
The tribological behavior of different low infrared (IR) emission ceramic materials from the titanate group has been investigated at room temperature under gross slip fretting conditions against 100Cr6 ball bearing steel and α-alumina as the counterface materials. For all material pairs, friction and wear depended largely on the relative humidity of the environment. When paired with steel the low IR-emission ceramic disks showed higher wear resistance. Under dry conditions, almost no wear was found on the low IR-emission ceramic specimen. The high wear on the steel counter body is caused not only by tribo-oxidation, which is the main wear mechanism, but also by abrasion. In dry conditions a COF of 0.6 and in humid conditions a COF of 0.2 have been measured. When paired with α-alumina the results on wear are just opposite to those with steel counterbody and the low IR-emission ceramic materials show much lower wear resistance under all conditions. This is explained by the predominance of abrasion and the relatively large difference in hardness between the low IR-emission ceramic and α-alumina. In high humidity environments the results point to the formation of stable reaction layers causing lower friction and wear.
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