Journal of Materials Science

, Volume 39, Issue 13, pp 4113–4118

Negative thermal expansion artificial material from iron-nickel alloys by oxide co-extrusion with reductive sintering

  • J. Qi
  • J. W. Halloran
Article

DOI: 10.1023/B:JMSC.0000033391.65327.9d

Cite this article as:
Qi, J. & Halloran, J.W. Journal of Materials Science (2004) 39: 4113. doi:10.1023/B:JMSC.0000033391.65327.9d

Abstract

Objects with a fine-scale design of bimetallic beams can display negative thermal expansion. Based on a unit cell design for a negative expansion, produced by Optimal Design methods, we fabricate a thermoelastic “artificial material” using coextrusion of iron and nickel oxides, followed by reductive sintering. A bulk sample with 162 unit cells from Fe-60Ni and Fe-36Ni alloys displayed a thermal expansion coefficient of −3.0 × 10−6/°C, in agreement with the optimal design prediction.

Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • J. Qi
    • 1
  • J. W. Halloran
    • 1
  1. 1.Department of Materials Science and EngineeringUniversity of MichiganAnn ArborUSA