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Metallurgical and Materials Transactions B

, Volume 38, Issue 6, pp 957–964 | Cite as

Electrical Resistivity of Metal Powder Aggregates

  • J.M. Montes
  • F.G. CuevasEmail author
  • J. Cintas
Article

Abstract

An equation for calculating the electrical resistivity of a compressed powder mass, consisting of oxide-coated metal particles, has been derived. In addition to the intrinsic interest of the problem, the proposed equation is useful for describing the very early stages of electrical sintering processes. The problem is approached in a new way, relating the actual powder system to an equivalent system consisting of deforming spheres in a simple cubic packing, which is much easier to examine. The proposed equation was experimentally verified from measurements of the electrical resistivity for aluminum, bronze, iron, and nickel powders under pressure. The consistency between theoretical predictions and experimental results was reasonably good in all cases.

Keywords

Electrical Resistivity Oxide Film Nickel Powder Powder Mass Powder System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgment

The authors are grateful to FEDER/MCyT, Madrid, for funding this research within the framework of Project No. DPI2003–01213.

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Copyright information

© THE MINERALS, METALS & MATERIALS SOCIETY and ASM INTERNATIONAL 2007

Authors and Affiliations

  1. 1.Departamento de Ingeniería Mecánica y de los Materiales, Escuela Superior de IngenierosUniversidad de SevillaSevillaSpain

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