Journal of Materials Science

, Volume 21, Issue 4, pp 1423–1428 | Cite as

Electrical contact resistance and its relationship to hardness

  • L. Wieczorek
  • V. R. Howes
  • H. J. Goldsmid


Studies have been made of the electrical resistance at the contact between a silicon carbide indenter and various metals. It has been found that reproducible results can be obtained if the contact under load is subjected to a low-energy condenser discharge prior to the measurement of the resistance. After this pre-test operation, the electrical resistance is inversely proportional to the length of the diagonal of the indentation, as observed under a microscope. This allows one to define a hardness value, from the contact resistance measurement, that correlates well with the Vickers hardness. It is shown that the technique can be adapted to the continuous study of hardness under load for viscoelastic non-conducting materials.


Polymer Silicon Carbide Silicon Carbide Contact Resistance 
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Copyright information

© Chapman and Hall Ltd. 1986

Authors and Affiliations

  • L. Wieczorek
    • 1
  • V. R. Howes
    • 1
  • H. J. Goldsmid
    • 1
  1. 1.Department of Applied PhysicsUniversity of New South WalesKensingtonAustralia

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