THERMAL CONDUCTIVITY ALLOYS PB-MG IN THE TEMPERATURE RANGE 300–650°C

Authors & Affiliations

Kruglov A.B.¹, Kruglov V.B.¹, Kharitonov V.S.¹, Struchalin P.G.¹, Orlova E.A.², Zagrebaev S.A.², Jmurin V.G. ^2
1National Research Nuclear University “MEPhI”, Moscow, Russia
²A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia

Kruglov A.B. – PhD (Phys.-Math.), training resource worker, National Research Nuclear University “MEPhI”.
Kruglov V.B. – PhD (Tech.), Assoc. Prof., National Research Nuclear University “MEPhI”.
Kharitonov V.S. – PhD (Tech.), deputy head of department of thermal physics, National Research Nuclear University “MEPhI”.
Struchalin P.G. – engeneer, National Research Nuclear University “MEPhI”.
Orlova E.A. – Cand. Sci. (Tech.), Accos. prof., leading researcher, A.I. Leypunsky Institute for Physics and Power Engineering.
Zagrebaev S.A. – researcher, A.I. Leypunsky Institute for Physics and Power Engineering.
Jmurin V.G. – leading engeneer, A.I. Leypunsky Institute for Physics and Power Engineering.

Abstract

Fuel rods containing mixed uranium-plutonium nitride fuel are planned to use at the advanced nuclear power plants. In order to maintain an acceptable temperature during reactor operation is proposed to use highly conducting liquid metal layer between the fuel and fuel cladding. As the material of this layer is offered lead-magnesium alloys, the thermal conductivity of which has been insufficiently understood.

The study of thermal conductivity of lead-magnesium alloys in the temperature range 300-650єC using the original method was considered in the paper. Manufacturing process of alloy samples is briefly described, the scheme of thermal conductivity measurements on the NETZSCH LFA-457 facility is outlined. The dependence of the thermal conductivity on alloys temperature in 300-650°C range is the result of the study.

Keywords
thermal conductivity, thermal conductivity measurement method, thermal and physical properties, lead-magnesium

Article Text (PDF, in Russian)

References

UDC 621.7.029

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2016, issue 4, 4:4