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Journal of Applied Physics / Volume 100 / Issue 4 / INTERDISCIPLINARY AND GENERAL PHYSICS

J. Appl. Phys. 100, 044912 (2006); doi:10.1063/1.2335672 (7 pages)

The electrical conductivity of microcellular metals

Russell Goodall, Ludger Weber, and Andreas Mortensen

Ecole Polytechnique Fédérale de Lausanne (EPFL), Laboratory for Mechanical Metallurgy, Institute of Materials, CH-1015 Lausanne, Switzerland

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(Received 11 February 2006; accepted 6 June 2006; published online 30 August 2006)

The electrical conductivity of metallic foams varies strongly with porosity. Data are presented for replicated open-pore microcellular metal over a wide range of relative density. These data, together with data from the literature for different foam structures, are compared with previously suggested models for the conductivity of porous materials. We show that clear differences exist between the behavior of foams according to their different structural types and that simple models exist to capture these differences.

© 2006 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXISTING LITERATURE DATA
  3. THEORY
  4. EXPERIMENT
  5. DISCUSSION
    1. Size effect
    2. Comparison of experimental data with theory
  6. CONCLUSIONS

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KEYWORDS and PACS

Keywords

aluminium, aluminium alloys, magnesium alloys, metal foams, porous materials, electrical conductivity, porosity

PACS

  • 82.70.Rr

    Aerosols and foams

  • 72.15.Cz

    Electrical and thermal conduction in amorphous and liquid metals and alloys

  • 61.43.Gt

    Powders, porous materials

ARTICLE DATA

Permalink
http://link.aip.org/link/doi/10.1063/1.2335672

PUBLICATION DATA

ISSN:

0021-8979 (print)  
1089-7550 (online)

Publisher:

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    I. C. Kim and S. Torquato, J. Appl. Phys. 71, 2727 (1992)JAPIAU000071000006002727000001.

    A. V. Goncharenko, Phys. Rev. E 68, 041108 (2003).

    M. Tane, S. K. Hyun, and H. Nakajima, J. Appl. Phys. 97, 103701 (2005)JAPIAU000097000010103701000001.


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