ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 34, (1) 15 - 24 (1990)


THE DIFFUSION-ELECTRIC PROCESS IN WATER-SATURATED CERAMIC MIX
 
Havrda Jiří, Gregorová Eva, Oujiří František
 
Institute of Chemical Technology, Department of Silicate Technology, Suchbatarova 5, 166 28 Prague 6

A method based on measuring the concentration profile in a diffusion pair with an inner electric heat source was worked out for determining the diffusionelectric coefficient in a water-saturated porcelain mix. The diffusion-electric process, due to the concentration gradient of soluble salts in the saturated ceramic body, decreases the density of alternating electric current. The ceramic mix containing a concentration gradient of the soluble salts, behaves as an inhomogeneous conductor and if it holds that grad c = 0, it behaves as a homogeneous conductor.


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