PROTECTIVE METAL COATINGS MADE OF MOLYBDENUM ON STEEL 12Cr18Ni10Ti FOR FLUORIDE MELTS. OBTAINING, CERTIFICATION, EFFICIENCY

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

The successful use of molten alkali metal fluorides as an electrolyte for high-temperature devices requires the development of such reactor materials that have high corrosion resistance in melts with compositions characteristic of liquid-salt mixing reactors. This is one of the most important unresolved problems. One of the effective ways to reduce corrosion losses is to create a layer on the surface of the material that protects the metal from the corrosive effects of the environment. In this paper, molybdenum insulating coatings on steel 12Kh18Ni10Ti obtained in molten salts of various compositions and by various methods are considered as protective layers. Experiments were carried out on the electrodeposition of molybdenum coatings on structural materials based on iron (steel 12Cr18Ni10Ti). The coatings obtained by the electrochemical method are inhomogeneous and easily exfoliating. The thickness of molybdenum coatings obtained from molten salts is 8.15 and 20.34 μm on steel in FLiNaK and LiCl–KCl melt, respectively. Corrosion tests have shown the inefficiency of the molybdenum coating obtained from both chloride and fluoride melts. The corrosion rate of 12Cr18Ni10Ti steel in FLiNaK/FLiNaK + 5% CeF3 melts at 650°C and a holding time of 100 hours decreases in the following row: 12Cr18Ni10Ti + Mo (0.75/0.77 mm/year) > 12Cr18Ni10Ti (0.45/0.50 mm/year).

Авторлар туралы

E. Nikitina

Institute of High-Temperature Electrochemistry, Ural Branch of the RAS

Хат алмасуға жауапты Автор.
Email: neekeetina@mail.ru
Russia, Yekaterinburg

A. Kuznetsova

Institute of High-Temperature Electrochemistry, Ural Branch of the RAS

Email: neekeetina@mail.ru
Russia, Yekaterinburg

K. Seliverstov

Institute of High-Temperature Electrochemistry, Ural Branch of the RAS

Email: neekeetina@mail.ru
Russia, Yekaterinburg

Әдебиет тізімі

  1. Vas’ko A.T., Kovach S.K. Elektrokhimiya tugoplavkikh metallov [Electrochemistry of refractory metals]. Kiyev: Tekhnika, 1983. [In Russian].
  2. Spitsyn V.I., Drobysheva T.I. Kozanskiy L.P. Khimicheskiye vzaimodeystviya v vol’framatnykh sistemakh. Khimiya soyedineniy Mo(VI) i W(VI) [Chemical interactions in tungstate systems. Chemistry of Mo(VI) and W(VI) compounds]. Novosibirsk: Nauka, 1989. P. 3. [In Russian].
  3. Senderoff S., Mellors G.W. Electrodeposition of coherent deposits of refractory metals. V. Mechanism for the deposition of molybdenum from a chloride melt // J. Electrochem. Soc. 1967. 114. P. 556.
  4. Brencic J.V., Cotton F.A. Mechanism for the deposition of molybdenum from a chloride melt // Inorg. Chem. 1970. 9. P. 351–358.
  5. Inman D., Williams D.E. Electrochemistry – the past thirty years and the next thirty years. New York: Plenum Press, 1975.
  6. Selis S.M. Kinetics of electrode processes in molten salts // J. Phys. Chem. 1989. 72. P. 1442.
  7. Gorodyskiy A.V., Ometsinskiy B.V., Panov E.V. Elektrovosstanovle-niye molibdensoderzhashchikh kompleksov v galogenidnykh rasplavakh [Electroreduction of molybdenum-containing complexes in halide melts] // Proceedings of the I Ukrainian Republic. conf. in electrochemistry. 1973. II. P. 11. [In Russian].
  8. Popov B., Slavkov B., Laitinen A.O. Electrochemical reduction of molybdenum in molten lithium chloride–potassium chloride eutectic // In Abstr. 33 Run. Soc. Int. Electrochem. Lyon, 1982. I. P. 442.
  9. Inman D., Spencer R. Electrochemical reduction of molybdenum in molten salts // In book: Advanced extracting metal refining, Proceedings International Symposium, 1973. P. 413.
  10. Inman D., White S.H. The production of refractory metals by the electrolysis of molten salts; design factors and limitations // J. Appl. Electrochem. 1978. 8. P. 375–390.
  11. Gunawardena G., Hills G.J., Montenegro I., Scharifker B. Molybdenum electrodeposition from molten salts // J. Electroanal. Chem. 1982. 138. P. 225.
  12. Phillips J., Osteryoung R.A. Electrodeposition mechanism of molybdenum from melts // J. Electrochem. Soc. 1977. 124. Р. 1456.
  13. Inman D., Sethi R.S., Spencer R. Advances in extractive metallurgy and refining. IMM London, 1972.
  14. Inman D., Lovering D.G. Comprehensive treatise of electrochemistry. N.Y.: Plenum Press, 1983. 7. № 9.
  15. Bouteillon J., Gabriel J.C., P. C., Poignet J.C., Roman J.M. Electrochem. Technology of molten salts. Molten salt forum. Switzerlandland. Trans Tech Publications, 1993/94. 1–2. P. 147.
  16. Bouteillon J., Gabriel J.C., Poignet J.C., Roman J.M. Production of refractory metal layers and compounds from fused salts. In Proceedings of IS on Molten Salts Chemistry and Technology. Trans Tech Publications. Honolulu, 1993. 93. P. 458.
  17. Talanova M.I., Yesina N.O., Valeyev Z.I., Isayev V.A. Elektroosazhdeniye molibdena iz khloridnykh rasplavov [Electroreduction of molybdenum-containing complexes in halide melts] // Abstracts of the Russian Conf. in physical chemistry and electrochemistry of melts and solid electrolytes. Nal’chik, 2001. 1. P. 287. [In Russian].
  18. McCawley F.X., Cattoir F., Sullivan T. Electrodeposition of molybdenum from fused salts // Chem. Abstract. 1967. 66. P. 131–138.
  19. Senderoff. The metal molybdenum. Cleveland: Amer. Soc. Metals, 1968.
  20. Gurminder R.E., Cattoir F., Sullivan T. Molybdenum electrodeposition from fused chlorides // U.S. Bur. Mines. Report. Invest. № 6580.
  21. Filimonova G.V., Morkhov M.I. Elektroosazhdeniye molibdena iz khloridnykh rasplavov [Electrodeposition of molybdenum from chloride melts] // Proceedings of the All-Union Institute of Chem. engineering. 1966. 51. P. 142. [In Russian].
  22. Baraboshkin A.N., Saltykova N.A., Talanova M.I. Struktura sploshnykh osadkov molibdena, poluchennykh elektrolizom rasplava KCl, K–MoCl [Structure of continuous deposits of molybdenum obtained by electrolysis of a melt of KCl, K–MoCl] // Proceedings of the Institute of Electrochemistry of the Ural Center of the Academy of Sciences of the USSR. 1972. 18. P. 87. [In Russian].
  23. Mukherjee T.K., Cupta C.K. Molybdenum extraction from molybdenum sulfide // Met. Trans. 1974. № 5. P. 707–713.
  24. Stidhar R., Cupta C.K., Sundaram S.V. Nonaqueons media and molten salts. India, Hyderabud, 1978.
  25. Pini G., Ponzano R. La deposition de molibdene par electrolyse de sels faunds // Oberflachesuisse. 1977. 18. P. 97.
  26. Valeyev Z.I., Baraboshkin A.N. Elektroosazhdeniye molibdena iz khloridnykh rasplavov [Electrodeposition of molybdenum from chloride melts] // Vysokochistyye veshchestva. 1995. № 1. P. 66. [In Russian].
  27. Valeyev Z.I., Yesina N.O., Isayev V.A. Elektroosazhdeniye molibdena iz khloridnykh rasplavov [Electrodeposition of molybdenum from chloride melts] // Abstracts XII Russian Conference on physical chemistry and electrochemistry of melts and solid electrolytes. Nal’chik, 2001. I. P. 223. [In Russian].
  28. Valeyev Z.I., Baraboshkin A.N., Martem’yanova Z.S. Vliyaniye ochistki rasplava ot kislorodnykh primesey na strukturu i plasticheskiye svoystva elektroosazhdennogo molibdena [Influence of melt purification from oxygen impurities on the structure and plastic properties of electrodeposited molybdenum] // Elektrokhimiya. 1986. 22. P. 9. [In Russian].
  29. Baraboshkin A.N., Yesina N.O., Talanova M.I. Vliyaniye kislorodsoderzhashchikh primesey na skorost' rosta i rastvoreniye graney monokristallov molibdena [Influence of oxygen-containing impurities on the growth rate and dissolution of faces of molybdenum single crystals] // Vysokochistyye veshchestva. 1988. № 5. P. 206. [In Russian].
  30. Topor D.C., Selman J.R. Electrodeposition of molybdenum from ftoride melts // J. Electrochem. Soc. 1988. 135. P. 384.
  31. Stern K.H. Potentiometric studies of same oxyanions in molten fluorides // J. Electrochem. Soc. 1989. 136. P. 439.
  32. Baraboshkin A.N., Saltykova N.A., Semenov B.G. Elektroosazhdeniye vol’frama i yego splavov iz ftoridnykh rasplavov [Electrodeposition of tungsten and its alloys from fluoride melts] // Proceedings of the Institute of Electrochemistry of the Ural Center of the Academy of Sciences of the USSR. 1976. 24. P. 28. [In Russian].
  33. Saltykova N.A., Baraboshkin A.N., Semenov B.G. O prichinakh nestabil’nosti elektroosazhdeniya molibdena iz ftoridnykh rasplavov [On the reasons for the instability of molybdenum electrodeposition from fluoride melts] // Proceedings of the Institute of Electrochemistry of the Ural Center of the Academy of Sciences of the USSR. 1976. № 24. P. 32. [In Russian].
  34. Senderoff S., Mellors G.W. Electrodeposition of Coherent Deposits of Refractory Metals. VI. Mechanism for the deposition of molybdenum from a fluoride melt // J. Electrochem. Soc. 1967. 114. P. 586.
  35. Malyshev V.V. Teoreticheskiye osnovy i prakticheskaya realizatsiya elektroosazhdeniya molibdena v ionnykh rasplavakh [heoretical foundations and practical implementation of molybdenum electrodeposition in ionic melts] // Kiyev: Teoreticheskiye osnovy khimicheskoy tekhnologii. 2007. 41. № 3. P. 302–318. [In Russian].

Қосымша файлдар


© Е.В. Никитина, А.В. Кузнецова, К.Е. Селиверстов, 2023

Осы сайт cookie-файлдарды пайдаланады

Біздің сайтты пайдалануды жалғастыра отырып, сіз сайттың дұрыс жұмыс істеуін қамтамасыз ететін cookie файлдарын өңдеуге келісім бересіз.< / br>< / br>cookie файлдары туралы< / a>