Abstract

Phase diagram and ionic conductivity of KBr—NaBr mixed crystals system have been studied over the entire composition and stable temperature range. A maximum conductivity enhancement by a factor of 25 with respect to pure KBr, and with respect to pure NaBr, is obtained for the K 0.5Na 0.5Br solid solution at 500°C. The conductivity values are found to follow the melting (solidus) temperature in a correlated manner. The minimum in the solidus curve of the phase diagram is observed between 43 and 72 mole% NaBr at 615°C.

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