КОРРОЗИЯ ПЕРСПЕКТИВНЫХ МЕТАЛЛИЧЕСКИХ МАТЕРИАЛОВ ВО ФТОРИДНЫХ РАСПЛАВАХ ДЛЯ ЖИДКОСОЛЕВЫХ РЕАКТОРОВ

The corrosion behavior of metallic materials in fluoride melts of various compositions, studied by foreign and domestic authors from the sixties of the twentieth century to the present day, is compared, the influence of external and internal corrosion factors is estimated, the characteristics of high-temperature electrochemical corrosion common to all melts are revealed, and the influence of the chemical nature of the melt is highlighted. The introduction substantiates the relevance of the review, its importance and significance for the development of modern materials science, physical chemistry and electrochemistry, in particular in the field of electrochemical materials science—for the development of corrosion-resistant materials in the nuclear industry, in particular, for molten salt reactors. The main part contains a brief description of the current state of high-temperature corrosion in relation to research in fluoride melts, the specifics of methods of protection against corrosion in molten salt electrolytes. A review of methods for studying the corrosion aspects of the interaction of metallic materials with molten salt electrolytes, taking into account the electrochemical activity of fluoride melts of various compositions, is presented. The available experimental data are analyzed and fundamental regularities of the corrosion-electrochemical behavior of metallic materials in molten salt electrolytes are revealed. Effective methods of protection against corrosion in relation to high-temperature environments are proposed, conclusions are drawn about the advisability of using various metallic materials in molten salts.