고온 리튬용융염에서 Ni 200 및 Ni-base 합금의 부식거동

조수행; 임종호; 윤기석; 박성원; Soo-Hang Cho; Jong-Ho Lim; Ki-Seok Yun; Seung-Won Park

Korean Journal of Materials Research, Vol.14, No.4, 251-259, April, 2004

DOI10.3740/MRSK.2004.14.4.251 Export Citation

고온 리튬용융염에서 Ni 200 및 Ni-base 합금의 부식거동

Corrosion Behavior of Ni 200 and Ni-base Alloys in Hot Lithium Molten salt

조수행^†, 임종호, 윤기석, 박성원

한국원자력연구소

Soo-Hang Cho^†, Jong-Ho Lim, Ki-Seok Yun, and Seung-Won Park

Korea Atomic Energy Research Institute, Korea

E-mail:

In the development of the advanced spent fuel management process based on the molten salt technology, it is essential to choose the optimum material for the process equipment handling molten salt. Corrosion behavior of Ni 200 and Ni-base alloys in molten salt of LiCl- Li 2 O under oxidation atmosphere was investigated in the temperature range of 650 800 ? C for 24~312 hrs. The order of corrosion rate was Ni 200 > Inconel 690 > Inconel 601 > Inconel 600. Inconel 600 alloy showed the highest corrosion resistance among the examined alloys, but Ni 200 exhibited the highest corrosion rate. Corrosion products of Inconel 600 and Inconel 601 were Cr 2 O 3 and NiFe 2 O 4 . In case of Inconel 690, a single layer of CrO 2 O 3 was formed in the early stage of corrosion and an outer layer of NiFe 2 O 4 and inner layer of Cr 2 O 3 were formed with increase of corrosion time. Inconel 600 showed local corrosion behavior and Inconel 601, 690 showed uniform corrosion behavior.

Keywords:Molten salt corrosion;High temperature corrosion;Molten salt

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[2] Kameswari S, Oxid. Met., 26, 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 N, 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] Fueki K, Bruce Wagner J, Trans. Electrochem. Soc., 112, 384 (1965)

[10] Izuta H, Komura Y, Journal of the Japan institute of metals, 58, 1196 (1994)

[11] Harada Y, J. of Jap. Thermal Spraying Soc., 33, 128 (1996)

[12] Johnston RK, The Oxide Handbook, p. 24 IFI/Plenum, G. V. Samsonov, (1982) (1982)

[13] Evans UR, 'An Introduction to Metallic Corrosion', Edward Amold, London (1948) (1948)

[14] Turkdogan ET, 'Physical Chemistry of High temperature Technology', Academic Press, New York (1980) (1980)

[15] Stull DR, Prophet H, JANAF Thermochemical Tables, 2nd ed., NSRDS-NBS 37, U.S. Department of Commerce, Washington, D.C., (1971) (1971)

[16] Kellogg HH, J. Chem. Eng. Data, 14, 41 (1969)

[17] Haffe K, Oxidation of Metals, p. 19, Plenum press, (1965) (1965)

[18] Sarioglu S, Blachere JR, Pettit FS, Meier GH, Smialek JL, Mennicke C, Mater. Sci. Forum, 251-254, 405 (1997)

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

[20] Wood GC, Corros. Sci., 12, 173 (1962)