Measurement of Ultrasonic Attenuation in Liquid Sodium and Potassium

1963 ◽  
Vol 35 (10) ◽  
pp. 1571-1574 ◽  
Author(s):  
S. V. Letcher ◽  
R. T. Beyer
Keyword(s):  
Ultrasonic Attenuation ◽  
Liquid Sodium ◽  
Sodium And Potassium

scholarly journals Thermodynamic Reassessment of the Na-Cu and Na-K Binary Systems

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 629 ◽  
Author(s):  
Evgeny Trofimov ◽  
Olga Samoilova ◽  
Olga Zaitseva ◽  
Elena Vakhitova
Keyword(s):  
Software Package ◽  
Binary Systems ◽  
Nuclear Reactors ◽  
Nuclear Industry ◽  
Liquid Sodium ◽  
Cooling Agent ◽  
Significant Interest ◽  
Factsage Software ◽  
Kister Equation ◽  
Sodium And Potassium

The Na-Cu and Na-K systems are of significant interest due to the use of liquid sodium and melt of sodium and potassium in the nuclear industry as a cooling agent in nuclear reactors. In the present work, thermodynamic modeling of phase equilibria in the Na-Cu and Na-K systems is carried out, based on the available published experimental data. This modeling was done using the “FactSage” software package (version 7.0). The set of Redlich-Kister equation parameters was obtained, which allows one to describe the dependence of Gibbs energy from composition and temperature for solutions that can be formed in the studied systems. Phase diagrams (T-x diagrams) of the investigated systems were calculated.

Molecular dynamics simulation of the transport properties of liquid sodium and potassium

1984 ◽  
Vol 14 (10) ◽  
pp. 2315-2321 ◽  
Author(s):  
L M Berezhkovsky ◽  
A N Drozdov ◽  
V Yu Zitserman ◽  
A N Lagar'kov ◽  
S A Triger
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Transport Properties ◽  
Dynamics Simulation ◽  
Liquid Sodium ◽  
Sodium And Potassium

scholarly journals Viscosity of liquid sodium and potassium

1936 ◽  
Vol 157 (891) ◽  
pp. 264-277 ◽  
Keyword(s):  
Alkali Metals ◽  
Capillary Tube ◽  
Liquid Metals ◽  
Vertical Axis ◽  
Crystal Form ◽  
Liquid Sodium ◽  
Organic Liquids ◽  
Viscosity Data ◽  
Coefficient Of Viscosity ◽  
Sodium And Potassium

According to the theory of liquid viscosity put forward by Professor Andrade, the viscosity of a liquid is closely connected with the characteristic frequency of vibration, and the temperature coefficient of viscosity obeys an exponential formula involving an internal energy coefficient. It appears that, for comparison with theory, viscosity data for elementary substances like liquid metals are specially desirable. Hitherto, viscosity measurements have been largely confined to organic liquids, while for liquid metals, with certain notable exceptions, viscosity data have been scanty and discrepant. The work described below was undertaken with the view of supplying some of the data which are needed. Sodium and potassium were chosen for the measurement on account of the simplicity of both their atomic structures and of their crystal form. They also have the advantage that the viscosities of the other three alkali metals—lithium, rubidium, and caesium—are also accessible to measurement, the melting points lying within an easily-realized temperature range. Owing to the fact that these metals oxidize very quickly in the presence of even a slight trace of air, the sphere method, in which the liquid is enclosed in a sphere and its viscosity found by observing the damping of the oscillations about a vertical axis, is specially suitable for the purpose. This method, as lately developed by Professor Andrade and the author, has proved capable of an accuracy probably as great as that of the standard methods. It is simple in manipulation, renders temperature control easy, and does not involve the corrections involved in capillary tube methods.

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