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Wear mechanisms on multiphase Al2O3 ceramics during running-in period in unlubricated oscillating sliding contact

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Abstract

Commercially available, slightly porous monolithic alumina was modified using CO2-laser irradiation by embedding zirconia, titanium nitride and tungsten carbide. The thickness of the modified surface layers was 550 μm after laser treatment and the composition of the multiphase microstructures depended on the laser process and the additives used. Tribological tests were carried out on the ceramics using a laboratory tribometer in unlubricated, oscillating sliding contact at room temperature against alumina balls. The wear mechanisms during running-in were analysed by short-time tests and studies of the worn surfaces by SEM.

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Authors and Affiliations

  1. Institute of Materials Science Engineering II, Universität Karlsruhe (TH), D-76228, Karlsruhe, Germany

    D. Schaupp, J. Schneider & K.-H. Zum Gahr

Authors
  1. D. Schaupp
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  2. J. Schneider
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  3. K.-H. Zum Gahr
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Schaupp, D., Schneider, J. & Zum Gahr, KH. Wear mechanisms on multiphase Al2O3 ceramics during running-in period in unlubricated oscillating sliding contact. Tribology Letters 9, 125–131 (2001). https://doi.org/10.1023/A:1018852418897

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