Authors & Affiliations
Kruglov A.B., Kruglov V.B., Kharitonov V.S., Struchalin P.G.
”National Research Nuclear University “MEPhI”, Moscow, Russia
Kruglov V.B. – Associate professor, Cand. Sci. (Tech.), ”National Research Nuclear University “MEPhI”.
Kharitonov V.S. – Deputy head of department of thermal physics, Cand. Sci. (Tech.), ”National Research Nuclear University “MEPhI”.
Struchalin P.G. – Engeneer, ”National Research Nuclear University “MEPhI”.
The work is devoted to the experimental study of contact thermal resistance between melts of liquid metals and a heat transfer surface. A description is given of an experimental method for determining thermal resistance based on the laser flash method and joint processing of the initial section of experimental and calculated thermograms of a measuring cell containing a melt using special mathematical functions. The procedure for preparing for the experiment, the method of measurement. The paper presents the results of measuring the contact thermal resistance between lead C1 and steels 12X18H10T and EP-823, formed in successive processes of melting and crystallization of the melt in the measuring cell. The lying drop method was used to measure the wetting angle of lead for these steels. The measurements were carried out after a long exposure at elevated temperatures and the subsequent crystallization of lead on a steel substrate. It is noted that liquid lead does not show wetting of the steels used in the experiments.
The study was carried out at the expense of the Russian Science Foundation (project no. 16-19-10548).
contact thermal resistance, liquid metal sublayer, heat-conducting sublayer, lead, liquid metals, fast neutron reactors
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