43. Ceramic Laminates with High Mechanical Reliability by Design

  1. Edgar Lara-Curzio
  1. Vincenzo M. Sglavo1 and
  2. Massimo Bertoldi2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291221.ch43

Mechanical Properties and Performance of Engineering Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 2

Mechanical Properties and Performance of Engineering Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 2

How to Cite

Sglavo, V. M. and Bertoldi, M. (2005) Ceramic Laminates with High Mechanical Reliability by Design, in Mechanical Properties and Performance of Engineering Ceramics and Composites: Ceramic Engineering and Science Proceedings, Volume 26, Number 2 (ed E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291221.ch43

Author Information

  1. 1

    DIMTI, University of Trento Via Mesiano, 77 38050 Trento (Italy)

  2. 2

    Eurocoating Spa Via Al Dos de la Roda, 60 38057 Pergine Valsugana (Italy)

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982329

Online ISBN: 9780470291221

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Keywords:

  • ceramic laminates;
  • thermal expansion;
  • grain anisotropy;
  • high fracture resistance;
  • biaxial residual stresses

Summary

A procedure for designing innovative ceramic laminates with high mechanical performances is proposed in this work. A fracture mechanics approach has been considered to define the stacking sequence, thickness and composition of the different laminae on the basis of the requested strength and of the defect size distribution. Once the different laminae are stacked together a residual stress profile is generated upon cooling after sintering because of the differential thermal expansion coefficient. Such residual stress profile is conceived in order to allow stable growth of surface defects upon bending and guarantee limited strength scatter. As an example, the proposed approach is then used to design and produce a ceramic laminate in the alumina-mullite system.