ORNL-2106 - the Molten Salt Energy Technologies Web Site

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PERIOD ENDING JUNE 10, 1956
UNCLASSIFIED
ORNL-LR-WIG 14635
0 0 2 3 4 5 6 7 8 9 10
METAL FLUORIDE ADDED (wt % M++)
Fig. 2.2.3. Effect of Amount of Metal Fluoride Added on Solubility of NiF,, FeF,, and CrF, in
NaF-ZrF4 (53.47 mole %) at 600°C.
metal fluoride are additional evidence for the mole %) were continued through the use of thecon-
belief that ZrF, is combined with the metal fluo- centration cells discussed previou~ly.~S Cells of
ride in the solid phase. the type
MIMF,*xZrF,(c J, NaF-ZrF,I INaF-ZrF,, MF2*xZrF,(c2)lM ,
A comparison of values given for Fett and total where M was Fe, Ni, or G, and x = 0 or 1, were
iron shows that Fet+ is stable under these con at 525 to 75OoC in a helium atmosphere,
tions. The slight dev ns noted are attributa tainers were alumina, platinum, the
to experimental error hen M was iron and nickel; a ZrO, bridge
Cr++ and total chromium is egnated with NaF-ZrF4 (53-47 mole %) served
it is evident that more than 90% of the chromium i the electrical contact between the two half
present as Ctt. Since the sturting material d en the electromotive force was measured
not contain over 95% of the chromium as Gtt, it as a function of temperature, the saturation points
apparent from the points of discontinuity in
lot of voltage vs temperature.
OF ELECTROMOTIVE FORCES
CONCENTRATION CELLS
L. E. Topol
Solubility studies of structural metal fluorides
and their complexes in molten NaF-ZrF, (53-47
he cell assembly
to measure the temperature of either of the half
cells directly. The temperature recorded by a
thermocouple placed in a well that was permanently
15~. E. ~ ~ ANP ~ Qum. ~ P,og. 1 Rep, , March 1956,
ORNL-2061, p 89.
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