Abstract
Choosing structural materials for molten-salt nuclear reactors is a high-priority problem. The results making it possible to choose the basic structural material for a molten-salt nuclear reactor are colligated in the present article. Forced and natural circulation setups operating under reactor and laboratory conditions with molten metal-fluoride salts with different compositions have been developed at the National Research Center Kurchatov Institute: LiF–NaF–BeF2–PuF3, LiF–BeF2–UF4, and LiF–BeF2–ThF4–UF4. Corrosion tests were conducted with domestically produced corrosion-resistant steel (12Kh18N10T, EP-164) and specially developed nickel-based alloys (KhN80M-VI, KhN80MTYu, KhN80MTV, et al.) as well as the alloy Hastelloy (USA), MONICR (Czechoslovakia) and EM-721 (France) in the working temperature range 600–800°C and mechanical loads up to 80 MPa on the samples.
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