CERAMIC THERMOELECTRIC CONVERSION ELEMENT, ITS PRODUCTION METHOD AND ITS CONTACTING METHOD

摘要

PROBLEM TO BE SOLVED: To realize high efficiency thermoelectric conversion generation for a long time without being damaged by radiation, by arranging a ceramic thermoelectric conversion element in a pressure vessel and high temperature pipes of a reactor. SOLUTION: This thermoelectric conversion element is capable of highly efficient thermoelectric conversion even in a high temperature and strong radiation location. It is made of a heat-resistive ceramic material of which electric resistance is 10Ωcm or less and the electromotive force is a few mV or more and the material is porous having a low heat conductance and a high coefficient of performance Z. P type thermoelectric conversion element is produced by sintering SiC + boron carbide (1 to 100 wt.%) in argon or nitrogen gas environment. N type thermoelectric conversion element is produced by sintering SiC + C (1 to 10 wt.%) or Si (1 to 10 wt.%) in argon or nitrogen gas environment. The thermoelectric conversion element and the lead wire are connected by using Ti group braze.