Electrical Conductivity of Alumina/Aluminum Composites Synthesized by Directed Metal Oxidation

Hari Venugopalan; Kanishka Tankala; Tarasankar DebRoy

doi:10.1111/j.1151-2916.1994.tb04547.x

Electrical Conductivity of Alumina/Aluminum Composites Synthesized by Directed Metal Oxidation

Hari Venugopalan
, Kanishka Tankala
, Tarasankar DebRoy

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Electrical conductivities of Al₂O₃/A1 composite synthesized by directed oxidation of an aluminum alloy, and sintered Al₂O₃–4% MgO are measured. The high conductivity of the Al₂O₃/A1 composite compared to sintered Al₂O₃–4% MgO is shown as proof of the presence of continuous metal channels in the composite. Furthermore, the conductivity data are used to determine the activation energy for the diffusion of the dominant charge carrier in the oxide matrix.

Original language	English (US)
Pages (from-to)	3045-3047
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	77
Issue number	11
DOIs	https://doi.org/10.1111/j.1151-2916.1994.tb04547.x
State	Published - Nov 1994

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.1994.tb04547.x

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title = "Electrical Conductivity of Alumina/Aluminum Composites Synthesized by Directed Metal Oxidation",

abstract = "Electrical conductivities of Al2O3/A1 composite synthesized by directed oxidation of an aluminum alloy, and sintered Al2O3–4\% MgO are measured. The high conductivity of the Al2O3/A1 composite compared to sintered Al2O3–4\% MgO is shown as proof of the presence of continuous metal channels in the composite. Furthermore, the conductivity data are used to determine the activation energy for the diffusion of the dominant charge carrier in the oxide matrix.",

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N2 - Electrical conductivities of Al2O3/A1 composite synthesized by directed oxidation of an aluminum alloy, and sintered Al2O3–4% MgO are measured. The high conductivity of the Al2O3/A1 composite compared to sintered Al2O3–4% MgO is shown as proof of the presence of continuous metal channels in the composite. Furthermore, the conductivity data are used to determine the activation energy for the diffusion of the dominant charge carrier in the oxide matrix.

AB - Electrical conductivities of Al2O3/A1 composite synthesized by directed oxidation of an aluminum alloy, and sintered Al2O3–4% MgO are measured. The high conductivity of the Al2O3/A1 composite compared to sintered Al2O3–4% MgO is shown as proof of the presence of continuous metal channels in the composite. Furthermore, the conductivity data are used to determine the activation energy for the diffusion of the dominant charge carrier in the oxide matrix.

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Electrical Conductivity of Alumina/Aluminum Composites Synthesized by Directed Metal Oxidation

Abstract

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