고온 리튬용융염계 산화분위기에서 Inconel 합금의 부식거동

조수행; 서중석; 윤지섭; 박성원; Soo-Hang Cho; Chung-Seok Seo; Ji-Sup Yoon; Seoung-Won Park

Korean Journal of Materials Research, Vol.16, No.9, 557-563, September, 2006

DOI10.3740/MRSK.2006.16.9.557 Export Citation

고온 리튬용융염계 산화분위기에서 Inconel 합금의 부식거동

Corrosion Behavior of Inconel Alloys in a Hot Lithium Molten Salt under an Oxidizing Atmosphere

조수행^†, 서중석, 윤지섭, 박성원

한국원자력연구소

Soo-Hang Cho^†, Chung-Seok Seo, Ji-Sup Yoon, and Seoung-Won Park

Korea Atomic Energy Research Institute, Daejeon 305-353, Korea

E-mail:

The electrolytic reduction of spent oxide fuel involves the liberation of oxygen in a molten LiCl electrolyte, which results in a chemically aggressive environment that is too corrosive for typical structural materials. So, it is essential to choose the optimum material for the process equipment handling molten salt. In this study, corrosion behavior of Inconel 713LC, MA 754, X-750 and 718 in the molten salt under an oxidizing atmosphere was investigated at for hours. Inconel 713LC alloy showed the highest corrosion resistance among the examined alloys. Corrosion products of Inconel 713LC were and NiO, and those of Inconel MA 754 were while were produced from Inconel 718. Also, corrosion products of Inconel X-750 were found to be . Inconel 713LC showed local corrosion behavior and Inconel MA 754, 718, X-750 showed uniform corrosion behavior.

Keywords:corrosion behavior;hot corrosion;lithium molten salt

[References]

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Caplan D, Cohen M, Corrosion, 15, 141 (1959)
Tuck CW, Odgers M, Sachs K, Corros. Sci., 9, 271 (1969)
Kvernes I, Oliveira M, Kofstad P, Corros. Sci., 17, 237 (1977)
Davis HH, Graham HC, Krernes IA, Oxid. Met., 3, 431 (1971)
Stott FH, Wood GC, Shida Y, Whittle DP, Bastow BD, Corros. Sci., 21, 599 (1981)
Skashita M, Sato N, Corros, Sci., 17, 473 (1977)
Crayton CR, Lu YC, Corros. Sci., 29, 7 (1989)
Ling S, Rahmel TA, Petkovic-Luton R, Oxid. Met., 40, 180 (1993)

[1] Kohl FJ, Santoro GJ, Stearns CA, Fryburg GC, Rosner DE, J. Electrochem. Soc., 126, 1054 (1979)

[2] Karneswari S, Oxid. Met., 6, 33 (1973)

[3] Rahmel A, Engell HJ, Corrosion, 18, 320 (1969)

[4] Spiegel M, Biedenkipf P, Grabke HJ, Corros. Sci., 39, 1193 (1997)

[5] Mitsushima S, Kamiya M, Ota KI, J. Electrochem. Soc., 137, 2713 (1990)

[6] Kochergin MM, Stolyarava GI, J. Appl. Chem., 29, 789 (1956)

[7] Copson HR, J. Electrochem. Soc., 100, 257 (1953)

[8] Colom F, Bodalo A, Corros. Sci., 12, 73 (1972)

[9] Smyrl WH, Blanckburn MJ, Corrosion, 31, 370 (1972)

[10] Gill CB, Staumanis ME, Schlechten WE, J. Electrochem. Soc., 102, 42 (1955)

[11] Turkdogan ET, Physical Chemistry of High Temperature Technology, Academic Press, New York (1980) (1980)

[12] Izuta H, Kornura Y, J. Jpn. Inst. Mct., 58, 1196 (1994)

[13] Harada Y, Jpn. Therm, Spraying Soc., 33, 128 (1996)

[14] Wood GC, Corros. Sci., 2, 173 (1962)

[15] Stott FH, Wood GC, Stringer J, Oxid. Met., 32, 113 (1989)

[16] Allen GC, Wild RK, J. Electron. Spectroscopy, 5, 409 (1974)

[17] Caplan D, Cohen M, Corrosion, 15, 141 (1959)

[18] Tuck CW, Odgers M, Sachs K, Corros. Sci., 9, 271 (1969)

[19] Kvernes I, Oliveira M, Kofstad P, Corros. Sci., 17, 237 (1977)

[20] Davis HH, Graham HC, Krernes IA, Oxid. Met., 3, 431 (1971)

[21] Stott FH, Wood GC, Shida Y, Whittle DP, Bastow BD, Corros. Sci., 21, 599 (1981)

[22] Skashita M, Sato N, Corros, Sci., 17, 473 (1977)

[23] Crayton CR, Lu YC, Corros. Sci., 29, 7 (1989)

[24] Ling S, Rahmel TA, Petkovic-Luton R, Oxid. Met., 40, 180 (1993)