Answers are grounded in this paper and cite their sources.
The electrical conductivity of high purity (99.8 pct) has been determined using both a‐c and d‐c techniques. Measurements were made at temperatures between 700° and 1000°C and in a nitrogen pressure range of 1–10 −5 atm. The electrical conductivity is independent of nitrogen pressure. Galvanic cell results indicate that ionic conduction is negligible. Over the experimental temperature range, the electrical conductivity of follows the equation where the activation energy is . It is concluded that the conduction process is extrinsic due to carbon impurities (∼350 ppm) present in the .
No takes yet. Share an insight, caveat, or question.
Francis et al. (1976) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: