2022-Sustainable Industrial Processing Summit
SIPS2022 Volume 4 Kipouros Intl. Symp. Molten Salt, Ionic & Glass-forming Liquids & Powdered Materials

Editors:	F. Kongoli, R. Fehrmann, V. Papangelakis, I.Paspaliaris, G. Saevarsdottir.
Publisher:	Flogen Star OUTREACH
Publication Year:	2022
Pages:	100 pages
ISBN:	978-1-989820-40-7(CD)
ISSN:	2291-1227 (Metals and Materials Processing in a Clean Environment Series)

CD shopping page

4D Computer Models of T-x-y-z Diagrams Within the Tetrahedrized Fluoride-Chloride Quaternary Reciprocal Systems To Design The Fuels of Nuclear Reactor Generation 4

Vera Vorob'eva¹; Anna Zelenaya¹; Vasily Lutsyk¹; Marina Lamueva²; Maria Parfenova¹;
¹INSTITUTE OF PHYSICAL MATERIALS SCIENCE SB RAS, Ulan-Ude, Russian Federation; ²INSTITUTE OF PHYSICAL MATERIALS SCIENCE, Ulan-Ude, Russian Federation;
Type of Paper: Regular
Id Paper: 210
Topic: 13

Abstract:

The fuel compositions for molten-salt nuclear reactor of the 4th generation are usually fluorides of metals with a small cross-section of neutron capture [1-3]. Сhloride systems, compared to fluoride, have higher vapor pressures and lower thermodynamic stability at high temperatures. At the same time, they are less aggressive in relation to the structure of the material and have lower melting temperatures. Therefore, in order to ensure the more reliable operation of the next generation reactors, it is necessary to consider chemical processes and equilibrium in mutual fluoride-chloride systems. Among the binary systems composed of fluoride or chlorides of alkaline metals and uranium (plutonium) we can say, that all fluoride systems forming ternary M1,M2,U(Pu)||F (M1,M2=Li,Na,K,Rb) are experimentally studied in more or less detail. But the chloride systems M1,M2,U(Pu)||Cl (M1,M2=Li,Na,K,Rb) have been studied much less. And there is no information about the study of ternary reciprocal systems M,U(Pu)||F,Cl (M=Li,Na,K,Rb). Accordingly, the polyhedration of the M1,M2,U(Pu)||F,Cl (M1,M2=Li,Na,K,Rb) quaternary reciprocal systems can only be multivariate, and the construction of 4D computer models T-x-y-z diagrams of the resulting subsystems - virtual. Four variants of the Li,Na,U||F,Cl system polyhedration are discussed and 3 quintets of four- dimensional T-x-y-z diagrams for the quaternary systems have been forecasted. This work was been performed under the program of fundamental research SB RAS (project 0336-2019-0008), and it was partially supported by the RFBR project 19-38-90035.

Keywords:

Phase; Corrosion; Moltensalt; Solidification; Uranium; Chloride


References:

1. Thoma R.E., Editor. Phase Diagrams of Nuclear Reactor Materials. – Union Carbide
Corp., Oak Ridge, Tennessee, 1959. – 205 pp.
2. Gabcova J., Peschl J., Malinovsky M. et al //Chemicke Zvesti (Chemical Papers). 1976.
V. 30. No 6. P. 796-804.
3. Vorob’eva V., Zelenaya A., Lutsyk V., Lamueva M. T-x-y-z Diagram Prediction for the
Quaternary System Li,Na,Ca,La||F // IOP Conference Series: Materials Science and Engineering.
- 2020. - V. 1000, 012007.

Full Text:

Click here to access the Full Text

Cite this article as:

Vorob'eva V, Zelenaya A, Lutsyk V, Lamueva M, Parfenova M. (2022). 4D Computer Models of T-x-y-z Diagrams Within the Tetrahedrized Fluoride-Chloride Quaternary Reciprocal Systems To Design The Fuels of Nuclear Reactor Generation 4. In F. Kongoli, R. Fehrmann, V. Papangelakis, I.Paspaliaris, G. Saevarsdottir. (Eds.), Sustainable Industrial Processing Summit SIPS2022 Volume 4 Kipouros Intl. Symp. Molten Salt, Ionic & Glass-forming Liquids & Powdered Materials (pp. 65-74). Montreal, Canada: FLOGEN Star Outreach