Measurement of the Electrical Conductivity of ESR Fluxes Containing Fluoride by Four Electrodes Method with Alternating Current
1978 Volume 64 Issue 2 Pages 225-231
Details
1978 Volume 64 Issue 2 Pages 225-231
In order to measure the electrical conductivities of fluloride melts at high temperature, fbur electrodes method with AC has been developed. Various conditions in measurement of solution resistance were determined by use of potassium chloride aqueous solution at room temperature. The electrical condulctivities of pure calcium fluoride and those of commercial fluxes such as ANF-1P, ANF-6 and ANF-7 were measured in the temperature range from 1450 to 1750°C. The rcsults showed that the use of graphite crucible was unfavourable fbr those melts and the sufficient dehydration of samples and atomospheric argon gas were desirable. The specific conductivities of calcium fiuoride melts obtaincd at the temperatures of 1500, 1600 and 1700°C were 6.15, 6.40 and 6.60 mho/cm, respectively. Those results were compared with that of previous investigations.
