DEVICE FOR MEASURING THE GENERAL electrical conductivity and thermoelectric power of oxide materials on temperature and oxygen partial pressure

摘要

Apparatus for measuring the total electrical conductivity and thermoelectric power of oxide materials designed for the simultaneous determination of the total electrical conductivity four-probe method on direct current, and the thermo-electromotive force differential method depending on temperature and partial pressure of oxygen gas ambient atmosphere.; The installation comprises placed into an electric measuring cell comprising a current conductor, measuring thermocouple, gas-tight tube made of oxygen-ion-based solid electrolyte of zirconia, with an electrochemical oxygen pump and sensor partial pressure of oxygen, the microprocessor controller capable of automatically regulate environmental parameters of the test sample and measure the electrical properties of the conclusions and the preservation of the current data on a personal computer system circulation and drainage feed different gases / gas mixtures in the measurement cell, which allows fast and in a wide range of values ​​to modify the oxygen partial pressure in the cell and exclude the oxygen partial pressure gradients inside the cell. 1 bp f-ly 1 Fig.