Chapter 64. Material Design to Improve Wear Resistance of Silicon Nitride with Cvd Coatings

  1. Todd Jessen and
  2. Ersan Ustundag
  1. P. K. Mehrotra Phd

Published Online: 28 MAR 2008

DOI: 10.1002/9780470294635.ch64

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

Mehrotra, P. K. (2000) Material Design to Improve Wear Resistance of Silicon Nitride with Cvd Coatings, 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.ch64

Author Information

  1. Kennametal Inc. 1600 Technology Way Latrobe, PA15650

Publication History

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

ISBN Information

Print ISBN: 9780470375693

Online ISBN: 9780470294635

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Keywords:

  • composite material;
  • high fracture resistant;
  • coating adhesion;
  • silicon nitride;
  • microhardness

Summary

A silicon nitride based composite material with improved wear resistance has been designed by using high fracture resistant silicon nitride substrate and high wear resistant CVD coatings. A coating system consisting of alumina, titanium carbonitride and titanium nitride was deposited by CVD on a commercial silicon nitride substrate. Physical and mechanical properties of the composite were measured and compared to those of the substrate and coating materials. The transverse rupture strength of the composite was found to be lower than that of the silicon nitride substrate. Coating adhesion was also measured and analyzed. Improvement in wear resistance was demonstrated in a cutting tool application.