Chapter 48. Electrokinetic Aspect of Friction and Wear of Oxide Ceramics

  1. Todd Jessen and
  2. Ersan Ustundag
  1. Saša Novak1 and
  2. Jožef Vižintin2

Published Online: 28 MAR 2008

DOI: 10.1002/9780470294635.ch48

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

How to Cite

Novak, S. and Vižintin, J. (2000) Electrokinetic Aspect of Friction and Wear of Oxide Ceramics, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294635.ch48

Author Information

  1. 1

    J. Stefan Institute Ceramics Department Jamova c. 39 1000 Ljubljana, Slovenia

  2. 2

    Center for Tribology and Technical Diagnostics Mechanical Engineering Faculty 1000 Ljubljana, Slovenia

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375693

Online ISBN: 9780470294635

SEARCH

Keywords:

  • various lubricating;
  • electrokinetic properties;
  • tribocontact;
  • ceramic structural;
  • microstructural parameters

Summary

Grinding and sliding tests were used to assess the wear behavior of alumina and zirconia ceramics under various lubricating conditions. The electrokinetic properties of the particles formed in the contact were controlled by the pH of aqueous lubricant in order to establish the effect of near-surface forces that can affect the friction and wear of ceramics.

The results showed that a higher removal rate was obtained when the pH of the liquid was matched to the IEP of the material than when the pH values where chosen so that the ZP was high. The friction coefficient in the sliding contact of self-mating alumina was high in neutral pH, whereas significantly lower values were observed in acidic and alkaline liquids. Both results confum the importance of the role of electrokinetic properties of the slurry in the tribocontact.