Publication Date:
2019-08-27
Description:
The fully guarded three-terminal technique was used to perform conductivity measurements on single-crystal alumina at temperatures of 400-1300 C. The conductivity was also determined as a function of time at various temperatures and applied fields. Further, the fractions of the current carried by Al and O ions (ionic transference numbers) were determined from long-term transference experiments in the temperature range 1100-1300 C. A mathematical model of the conduction mechanism is proposed, and model predictions are compared with experimental results.
Keywords:
NONMETALLIC MATERIALS
Type:
American Ceramic Society, Journal (ISSN 0002-7820); 75; 295-304
Format:
text