Thermal and Electrical Conductivity of Molten Alumophosphate and Borosilicate Glass Containing Imitators of High-Active Wastes from SNF Processing


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Abstract

Thermal conductivity and electrical conductivity of borosilicate and alumophosphate glass containing imitators of highly active waste (HAW) from the processing of spent nuclear fuel VVER-440 are studied by the methods of coaxial cylinders and impedance spectroscopy from room temperature to 1200°С. For all glass samples, their thermal conductivity increases with temperature growth; however, the thermal conductivity of phosphate glass increases above the glass transition point more significantly to 2.0 W/m K at 1200°С. The thermal conductivity of borosilicate glass containing HAW imitators ranges within 1.40–1.65 W/m K in the temperature range 600–1200°С. The electrical conductivity of alumophosphate and borosilicate glass changes mainly with the concentration of sodium oxide and changes significantly with temperature. The influence of the concentration of the components of HAW imitators on the electrical conductivity of the melts is small in the studied range.

About the authors

M. B. Remizov

Federal State Unitary Enterprise Mayak Production Association

Email: kozlov_pavel@inbox.ru
Russian Federation, Ozersk, 456783

P. V. Kozlov

Federal State Unitary Enterprise Mayak Production Association; Ozersk Technological Institute, National Research Nuclear University MEPhI

Author for correspondence.
Email: kozlov_pavel@inbox.ru
Russian Federation, Ozersk, 456783; Ozersk, 456783

N. V. Vlasova

Federal State Unitary Enterprise Mayak Production Association

Email: kozlov_pavel@inbox.ru
Russian Federation, Ozersk, 456783

E. A. Belanova

Federal State Unitary Enterprise Mayak Production Association

Email: kozlov_pavel@inbox.ru
Russian Federation, Ozersk, 456783

A. V. Rudenko

Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences

Email: kozlov_pavel@inbox.ru
Russian Federation, Yekaterinburg, 620137

A. A. Kataev

Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences

Email: kozlov_pavel@inbox.ru
Russian Federation, Yekaterinburg, 620137

A. A. Red’kin

Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences

Email: kozlov_pavel@inbox.ru
Russian Federation, Yekaterinburg, 620137

O. Yu. Tkacheva

Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences; Ural Federal University

Email: kozlov_pavel@inbox.ru
Russian Federation, Yekaterinburg, 620137; Yekaterinburg, 620002

V. N. Dokutovich

Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences

Email: kozlov_pavel@inbox.ru
Russian Federation, Yekaterinburg, 620137

E. S. Filatov

Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences

Email: kozlov_pavel@inbox.ru
Russian Federation, Yekaterinburg, 620137

Yu. P. Zaikov

Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences; Ural Federal University

Email: kozlov_pavel@inbox.ru
Russian Federation, Yekaterinburg, 620137; Yekaterinburg, 620002


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