The corrosion resistance of heatproof nickel alloy in molten fluoride salts

• Date: 2005
• Main Authors: Azhazha, V.M., Bakai, A.S., Bobrov, Yu.P., Virich, V.D., Yemlyaninova, T.G., Kapustin, V.L., Kovtun, K.V., Lavrinenko, S.D., Malykhin, D.G., Petel’guzov, I.A., Pylypenko, M.M., Savchenko, V.I., Semyonov, N.A., Solopikhin, A.D., Shirokov, B.M.
• Format: Article
• Language: English
• Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2005
• Series: Вопросы атомной науки и техники
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/80559
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: The corrosion resistance of heatproof nickel alloy in molten fluoride salts / V.M. Azhazha, A.S. Bakai, Yu.P. Bobrov, V.D. Virich, T.G. Yemlyaninova, V.L. Kapustin, K.V. Kovtun, S.D. Lavrinenko, D.G. Malykhin, I.A. Petel’guzov, M.M. Pylypenko, V.I. Savchenko, N.A. Semyonov, A.D. Solopikhin, B.M. Shirokov // Вопросы атомной науки и техники. — 2005. — № 4. — С. 74-81. — Бібліогр.: 7 назв. — англ.

Studies have been made into corrosion and mechanical properties of high-nickel alloys prepared at NSC KIPT on the basis of high-purity metal components. Corrosion tests of the Hastelloy-type alloy in fluoride melts at 650°C revealed formation of no films in the process of corrosion during 700 hours. The corrosion of the alloy under study in molten fluorides is characterized by a weak interaction of melt components with the alloy, by penetration of Zr and Na atoms into the alloy at a depth of 3 to 5 μm over 700 hours, by the absence of oxide films on the surface. The chromium content in the near-surface layer of the alloy decreases to a depth of 10 μm. Corrosion tests cause no essential changes in the mechanical properties of the alloy.