Authors & Affiliations

Alchagirov B.B., Kyasova O.Kh.
Kabardino-Balkaria State University name after H.M. Berbekov, Nalchik, Russia

Alchagirov B.B. – Professor of the Department of Theoretical and Experimental Physics, Dr. Sci. (Phys.-Math.), Kabardino-Balkaria State University name after H.M. Berbekov. Contacts: 173, Chernyshevsky st., Nalchik, Kabardino-Balkarian Republic, Russia, 360004. Tel.: +7(963) 281-98-27; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Kyasova O.Kh. – graduate student, Kabardino-Balkaria State University name after H.M. Berbekov.

Abstract

To successfully solve the actual problem of searching and studying the thermophysical properties of materials suitable for the development and creation of a new generation of liquid metal coolants, the alloys of a number of p-metals of the periodic system of D. Mendeleev elements with the participation of alkali metals are most interesting. In particular, tin-sodium melts are also considered promising coolants for nuclear reactors, developing and creating new energy-intensive chemical current sources and safer miniature batteries — analogs of lithium batteries, etc. along with the well-known lead-lithium eutectic melt. However, many thermophysical and physicochemical properties of tin-sodium system alloys are poorly understood, making it difficult to analyze the prospects for their use. The paper critically reviewed the results of theoretical and experimental studies of the surface tension of tin-sodium system alloys, including the original experimental data of the authors, available in the literature. It is shown that experimental data on the isotherm of the ST of the Sn-Na system have been obtained only in two studies to date, and only for a narrow range of alloy compositions with a content of 0 to 5 at. % Na in tin, according to which sodium in its low content in melts with tin, it exhibits a rather high surface activity. Theoretical calculations of the Sn-Na surface tension isotherm have also been performed in several studies that predict the existence of two features in the form of a minimum and a maximum on the ST isotherm. Unfortunately, it is not yet possible to judge unambiguously about the reliability of the presence anomalies on the ST-isotherms of the Sn-Na system because of the total lack of experimental data on the ST alloys of this tin-sodium system in the full concentration range of the compositions. Thus, the current state of research on the temperature and concentration dependences of the surface tension of alloys of the tin sodium system should be considered unsatisfac-tory in qualitative and quantitative terms.

Keywords
tin, sodium, binary alloys, surface tension, overview, experiment, large drop method, isotherm, theoretical calculations, surface activity, adsorption

Article Text (PDF, in Russian)

References

UDC 546.33; 546.811; 532.612; 532.615; 550.34.013

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2018, issue 5, 5:4