Procedural analysis of a new method for determining the Gibbs energy and experimental data on thermodynamic properties of liquid-metal coolants based on alkali metal alloys

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778810130090· OSTI ID:22028259

Krechetova, G A; Shpil'rain, E E ^[1]

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1. Russian Academy of Sciences, Joint Institute of High Temperatures (Russian Federation)

A detailed procedural analysis is given and results of implementation of the new version of the effusion method for determining the Gibbs energy (thermodynamic activity) of binary and ternary systems of alkali metals Cs-Na, K-Na, Cs-K, and Cs-K-Na are presented. The activity is determined using partial pressures of the components measured according the effusion method by the intensity of their atomic beams. The pressure range used in the experiment is intermediate between the Knudsen and hydrodynamic effusion modes. A generalized version of the effusion method involves the pressure range beyond the limits of the applicability of the Hertz-Knudsen equation. Employment of this method provides the differential equation of chemical thermodynamics; solution of this equation makes it possible to construct the Gibbs energy in the range of temperatures 400 {<=} T {<=} 1200 K and concentrations 0 {<=} x{sub i} {<=} 1.

• OSTI ID: 22028259
• Journal Information: Physics of Atomic Nuclei, Vol. 73, Issue 13; Other Information: Copyright (c) 2010 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ATOMIC BEAMS
CESIUM
CONCENTRATION RATIO
DIFFERENTIAL EQUATIONS
DIFFUSION
INTERMETALLIC COMPOUNDS
LIQUID METALS
MATHEMATICAL SOLUTIONS
PARTIAL PRESSURE
POTASSIUM
SODIUM
TEMPERATURE DEPENDENCE
THERMODYNAMIC ACTIVITY
THERMODYNAMICS