Damage Mode and Crack Propagation in Dental Layer Ceramics

  1. Prof. T. W. Clyne and
  2. F. Simancik
  1. Jong-Won Chung1,
  2. Yeon-Gil Jung2 and
  3. Sung-Churl Choi3

Published Online: 21 DEC 2005

DOI: 10.1002/3527606203.ch42

Metal Matrix Composites and Metallic Foams, Volume 5

Metal Matrix Composites and Metallic Foams, Volume 5

How to Cite

Chung, J.-W., Jung, Y.-G. and Choi, S.-C. (2000) Damage Mode and Crack Propagation in Dental Layer Ceramics, in Metal Matrix Composites and Metallic Foams, Volume 5 (eds T. W. Clyne and F. Simancik), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606203.ch42

Editor Information

  1. Department of Materials Science and Metallurgy, Cambridge University, Pembroke Street, Cambridge CB2 3QZ, U.K.

Author Information

  1. 1

    Dept. of Ceram. Eng., Hanyang Univ., Seoul 133-791, Korea

  2. 2

    Dong Sue Trading Co., Ltd., Seoul 121-160, Korea

  3. 3

    Dept. of Ceram., Eng., Changwon Nat'l. Univ., Kyungnam, Korea

Publication History

  1. Published Online: 21 DEC 2005
  2. Published Print: 20 APR 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301263

Online ISBN: 9783527606207

SEARCH

Keywords:

  • dental layer ceramics;
  • damage mode;
  • crack propagation

Summary

Contact damage and crack behavior for two kinds of potential dental layered ceramics, porcelain/alumina and porcelain/zirconia bilayers, were observed with Hertzian and Vickers Indentation tests. Strength degradation of the coating material, indentation stress-strain response of each material, and crack pattern in the coating layer by Vickers indentation were examined. Additionally fracture strength was measured in terms of coating thickness. As a result, the coating material represents traditional brittle behavior, which was confirmed with Hertzian indentation stress-strain curve. The stress in each bilayer system was depended on thermal expansion mismatch between the coating and the substrate materials, which affected the strength in the bilayer systems.