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Thermodynamic properties of strontium tungstate crystal growth from sodium tungstate melts

✍ Scribed by B. N. Roy; V. K. Handa

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
291 KB
Volume
15
Category
Article
ISSN
0232-1300

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## Thermodynamic and Kinetic Parameters From the estimated diffusion rate-constants ( k D J of strontium tungstate crystal growth from sodium tungstate melts in platinum crucibles, energy (E), enthalpy (AH,), entropy (AS,) and free-energy (47,) of activation and the pre-exponential factor (k,) for

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## Abstract This paper presents studies on the crystallisation of alkaline‐earth metal tungstates by slow cooling of saturated solutions in sodium tungstate melts at 700 to 1000 Β°C. Solubility‐temperature diagrams were prepared for this temperature range. The effects of variation in the initial cry