Abstract
The effects of sintering temperature and time of PbS pellets made by cold pressing of beneficiated galena ore on the room temperature resistivity and room temperature thermoelectric power are reported. The increased resistivity of such pellets with increasing sintering time has been explained in terms of a possible reaction between PbS and PbO leading to compensation of “p”-type conductivity. The increase in thermoelectric power with sintering temperature and time has been explained on the basis of inhomogeneity in the sample following Kwok's approach.
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