Apparatus for the Determination of Diffusion Coefficients in Fused Salts (NaNO3) at High Pressure
- 1 July 1964
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 35 (7) , 807-810
- https://doi.org/10.1063/1.1746795
Abstract
An apparatus for the determination of diffusion coefficients in fused salts at pressures up to 2 kbar, together with the necessary experimental techniques, is described. Values of the self‐diffusion coefficients of 22Na in NaNO3 at 350°C are (2.10±0.09)×10−5 cm2 sec−1 at 1 bar, (1.90±0.05)×10−5 cm2 sec−1 at 400 bar, and (1.77±0.05)×10−5 cm2 sec−1 at 800 bar. The activation volume for the self‐diffusion of 22Na in NaNO3 is 10.7±1.4 cm3 mole−1.Keywords
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