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Keywords:

  • alumina;
  • carbonization;
  • ceramic composites;
  • composite materials;
  • graphite
Thumbnail image of graphical abstract

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.