Journal of Thermal Analysis and Calorimetry

, Volume 99, Issue 1, pp 165–172 | Cite as

Negative thermal expansion materials

Thermal properties and implications for composite materials
  • Michael B. Jakubinek
  • Catherine A. Whitman
  • Mary Anne White
Article

Abstract

Finite element analysis is used to explore composites of negative thermal expansion materials with positive thermal expansion materials (ZrW2O8 in Cu and ZrO2 in ZrW2O8) and evaluate how thermal and mechanical properties, rates of cooling/heating, and geometry and packing fraction influence the overall expansion and thermal stress. During rapid temperature changes, the transient short-time thermal expansion can be considerably larger than the steady-state value. Furthermore, thermal stress in the composite can be large, especially at the interface between the materials, and can exceed the material strength.

Keywords

Composites Finite element method Negative thermal expansion Thermal expansion 

Notes

Acknowledgements

We gratefully acknowledge D. Retallack for introducing us to FEM studies and a useful discussion with J. Zwanziger. This study was supported by NSERC of Canada, the Killam Trusts and the Sumner Foundation, along with the Canada Foundation for Innovation, and Atlantic Innovation Fund and other partners that fund the Facilities for Materials Characterization managed by the Institute for Research in Materials at Dalhousie University.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  • Michael B. Jakubinek
    • 1
    • 3
  • Catherine A. Whitman
    • 2
    • 3
  • Mary Anne White
    • 1
    • 2
    • 3
  1. 1.Department of Physics and Atmospheric ScienceDalhousie UniversityHalifaxCanada
  2. 2.Department of ChemistryDalhousie UniversityHalifaxCanada
  3. 3.Institute for Research in MaterialsDalhousie UniversityHalifaxCanada

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