Electrical conductivity of two-phase composite material
- Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Materials and Machine Mechanics
It is a long standing problem to predict the effective electrical conductivity of binary mixtures or two-phase composites. The early history of this problem is often connected with the names of Clausius, Mossotti, Lorenz, and Lorentz. Currently, the general effective media (GEM) equation, proposed by McLachlan, seems to explain different results of experimental studies over an entire composition range. The GEM equation consists of electrical conductivity of constituent phases, their volume fractions and two free parameters. As has been pointed out by Boccaccini the free parameters of the GEM equation do not have yet a clear correlation with the real features of the microstructure. In this paper the author discusses such correlation using connections among the GEM equation, percolation theory and effective medium theory.
- OSTI ID:
- 634739
- Journal Information:
- Scripta Materialia, Vol. 39, Issue 2; Other Information: PBD: 12 Jun 1998
- Country of Publication:
- United States
- Language:
- English
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