The polarising effects in sintered kaolin

  • FM D'ujanga Physics Department, Makerere University, P O Box 7062, Kampala, Uganda
  • Y Kaahwa Physics Department, Makerere University, P O Box 7062, Kampala, Uganda
  • L Atteraas Department of Physics, University of Bergen

Abstract

The polarizing effects in sintered kaolin samples were analysed in terms of the sample density (or porosity) using direct current (dc) techniques. More porous samples exhibited higher polarizing effects than the less porous ones. The conduction carriers in kaolin samples at room temperature were found to be mainly electrons, with ionic conduction being enhanced by the moisture content with the pores. The influence of the uniaxial pressure and particle-size on the compacted and sintered density of the ceramic have been studied, and a density-pressure relationship before- and after-sintering conditions obtained.

Tanzanian Journal of Science Vol. 28(1) 2002: 63-70
Section
Articles

Journal Identifiers


eISSN: 2507-7961
print ISSN: 0856-1761