Electrically Conductive Dense and Porous Alumina with In-Situ-Synthesized Nanoscale Carbon Networks

Authors

  • Ruben L. Menchavez,

    1. Processing Group, Ceramics Research Laboratory, Nagoya Institute of Technology, Asahigaoka 10-6-29, Tajimi City, 507-0071, Gifu Prefecture (Japan)
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  • Masayoshi Fuji,

    Corresponding author
    1. Processing Group, Ceramics Research Laboratory, Nagoya Institute of Technology, Asahigaoka 10-6-29, Tajimi City, 507-0071, Gifu Prefecture (Japan)
    • Processing Group, Ceramics Research Laboratory, Nagoya Institute of Technology, Asahigaoka 10-6-29, Tajimi City, 507-0071, Gifu Prefecture (Japan).
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  • Minoru Takahashi

    1. Processing Group, Ceramics Research Laboratory, Nagoya Institute of Technology, Asahigaoka 10-6-29, Tajimi City, 507-0071, Gifu Prefecture (Japan)
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  • This study was supported by the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) through a project on “Cooperation for Innovative Technology and Advanced Research in Evolution Area, 2006-8”. RLM thanks Dr. C. Takai and H. Hibino for their assistance with transmission electron microscopy observations. The authors also gratefully acknowledge Japan Fine Ceramics (JFCC) for their assistance with sintering samples.

Abstract

original image

Electrically conductive dense and porous alumina compacts are fabricated by sintering dried gel-cast alumina samples with a homogeneous gel-binder distribution under an argon atmosphere. Sintering at an optimal temperature of 1700 °C leads to the uniform formation of electrically conductive nanoscale graphitic conduits throughout the composite, as shown in the figure.

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