31. Sliding Contact Damage of Y-α/β COmposite SiAlON Ceramics

  1. Edgar Lara-Curzio and
  2. Michael J. Readey
  1. Wataru Kanematsu,
  2. Mark I. Jones and
  3. Kiyoshi Hirao

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291191.ch31

28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings, Volume 25, Issue 4

28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings, Volume 25, Issue 4

How to Cite

Kanematsu, W., Jones, M. I. and Hirao, K. (2004) Sliding Contact Damage of Y-α/β COmposite SiAlON Ceramics, in 28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings, Volume 25, Issue 4 (eds E. Lara-Curzio and M. J. Readey), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291191.ch31

Author Information

  1. National Institute of Advanced industrial science and technology 2266-98 shimoshidami, moriyamaku Nagoya, 463-8560 Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2004

ISBN Information

Print ISBN: 9780470051528

Online ISBN: 9780470291191

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Keywords:

  • damage formation mechanism;
  • ceramics;
  • scratch tests;
  • tangential force;
  • plasma etching procedure

Summary

Damage formation mechanism in sliding contact of SiAlON against silicon nitride has been investigated to highlight a major mechanical determinant of sliding wear behavior. A progressive loading scratch tester with a slider of silicon nitride ball, on which the normal load was increased with increasing sliding distance, was utilized for tests on yttrium containing SiAlON ceramics of different amounts of the α/β phase. The damage was visualized using a plasma etching procedure previously developed. A series of arc cracks shows up on etched surface from the onset of sliding. With increase in normal load, the grain release region after etching, indicating the presence of subsurface damage, was formed in-between the cracks and further increase in load results in its expansion. The depth of the damage zone, measured from taper section view, tends towards an expansion with decreasing β phase content, lending support to the previous test results that wear rate follows the reverse order of β phase content in severe wear regime.