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

Hari Venugopalan, Kanishka Tankala, Tarasankar Debroy

Research output: Contribution to journalArticle

10 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)3045-3047
Number of pages3
JournalJournal of the American Ceramic Society
Volume77
Issue number11
DOIs
StatePublished - Jan 1 1994

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Aluminum Oxide
Aluminum
Alumina
Metals
Oxidation
Composite materials
Charge carriers
Oxides
Aluminum alloys
Activation energy
Electric Conductivity

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

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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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Electrical Conductivity of Alumina/Aluminum Composites Synthesized by Directed Metal Oxidation. / Venugopalan, Hari; Tankala, Kanishka; Debroy, Tarasankar.

In: Journal of the American Ceramic Society, Vol. 77, No. 11, 01.01.1994, p. 3045-3047.

Research output: Contribution to journalArticle

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