MCFC 양극측에서 Al-Cr피복 스테인레스강 분리판의 내식성평가

이민호; 윤재식; 배인성; 윤동주; 김병일; 박형호; M.H. Lee; J.S. Yoon; I.S. Bae; D.J. Yoon; B.I. Kim; H.H. Park

Korean Journal of Materials Research, Vol.13, No.2, 126-132, February, 2003

DOI10.3740/MRSK.2003.13.2.126 Export Citation

MCFC 양극측에서 Al-Cr피복 스테인레스강 분리판의 내식성평가

Evaluation of Corrosion Resistance on Al-Cr Coated Stainless Steel Separator for MCFC at Anode Side

이민호 , 윤재식¹, 배인성¹, 윤동주², 김병일³, 박형호^{1, †}

광양대학 제철금속공학과
¹희유금속소재연구소
²한려대학교 신소재공학부
³순천대학교 재료금속공학과

M.H. Lee , J.S. Yoon¹, I.S. Bae¹, D.J. Yoon², B.I. Kim³, and H.H. Park^{1, †}

Dep. of Metallurgical Eng., Kwangyang College, Kwangyang, 545-800, Korea
¹Korea Research Institute of Rare Matals, Sunchon, 540-742, Korea
²Dep. of Advanced Material Eng., Hanlyo Uni., Kwangyang, 545-800, Korea
³Material Science & Metallurgical Eng., Sunchon Nat. Uni., Sunchon, 540-742, Korea

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In order to evaluate the corrosion resistance at the anode side separator for molten carbonate fuel cell, STS316 and SACC-STS316 (chromium and aluminum were simultaneously deposited by diffusion into STS316 authentic stainless steel substrate by pack-cementation process) were applied as the separator material. In case of STS316, corrosion proceeded via three steps ; a formation step of corrosion product until stable corrosion product, a protection step against corrosion until breakaway occurs, a advance step of corrosion after breakaway. Especially, STS316 would be impossible to use the separator without suitable surface modification because of rapid corrosion rate after formation of corrosion product, occurs the severe problem on stability of cell during long-time operation. Whereas, SACC-STS316 was showed more effective corrosion resistance than the present separator, STS316 due to the intermetallic compound layer such as NiAl, Ni3Al formed on the surface of STS316 specimen. And it is anticipated that, in order to use SACC-STS316 alternative separator at the anode side, coating process, which can lead to dense coating layer, has to be developed, and by suitable pre-treatment before using it, very effective corrosion resistance will be achieved.

Keywords:separator;molten carbonate fuel cell;pack-cementation process;corrosion resistance

[References]

Appleby AJ, Foulkes FR, 'Fuel Cell Handbook'. Van Nostrand Reinhold, NEW YORK, (1989) (1989)
Park HH, Jang CI, Shin HS, Lee KY, Korean J. of Chem. Eng., 13(1), 35 (1996)
Yuh CY, Corrosion, 9-13, 267 (1987)
Park HH, Lee MH, Lee KT, Korean J. of Mat. Research, 8(6), 571 (1998)
Park HH, Goto S, Aso S, Lee KT, Komatsu Y, J. of the Soc. of Mat. Eng. for Resources of Japan, 10(2), 18 (1997)
Koseki, Kazao, Japan, PAT. NO 8900654 (1989) (1989)
Development of MCFC Power Plant Technology, General Electric Co., Final Report to U.S. Dept. of Energy, DE-ACO2-80ETI70198 (1983) (1983)
Park HH, Lee KT, Shin HS, Oxi. of Metals, 50(5-6), 377 (1998)
Bangaru NV, Krutenat RC, J. Vac. Soci. Technol., 132, 806 (1984)
Bangaru NV, Krutenat RC, NATO ASI Ser., 85, 427 (1984)
Rapp RA, Wang D, Weisert T, High Temperature Coating, 131 (1987) (1987)
Park HH, Lee KT, J. Corros. Soc. of Korea, 22(4), 213 (1993)
Park HH, Lee MH, Goto S, J. of the Japan Ins. of Metals, 65(1), 45 (2001)
Maru HC, 'Stability of Iron and Nickel Base Alloys in MCFC', NACE 85 (1985) (1985)
Yokokawa H, Saka N, Proc. 1990 Fuel Celll Seminar, AZ, 152 (1990)

[Related Articles]

[1] Appleby AJ, Foulkes FR, 'Fuel Cell Handbook'. Van Nostrand Reinhold, NEW YORK, (1989) (1989)

[2] Park HH, Jang CI, Shin HS, Lee KY, Korean J. of Chem. Eng., 13(1), 35 (1996)

[3] Yuh CY, Corrosion, 9-13, 267 (1987)

[4] Park HH, Lee MH, Lee KT, Korean J. of Mat. Research, 8(6), 571 (1998)

[5] Park HH, Goto S, Aso S, Lee KT, Komatsu Y, J. of the Soc. of Mat. Eng. for Resources of Japan, 10(2), 18 (1997)

[6] Koseki, Kazao, Japan, PAT. NO 8900654 (1989) (1989)

[7] Development of MCFC Power Plant Technology, General Electric Co., Final Report to U.S. Dept. of Energy, DE-ACO2-80ETI70198 (1983) (1983)

[8] Park HH, Lee KT, Shin HS, Oxi. of Metals, 50(5-6), 377 (1998)

[9] Bangaru NV, Krutenat RC, J. Vac. Soci. Technol., 132, 806 (1984)

[10] Bangaru NV, Krutenat RC, NATO ASI Ser., 85, 427 (1984)

[11] Rapp RA, Wang D, Weisert T, High Temperature Coating, 131 (1987) (1987)

[12] Park HH, Lee KT, J. Corros. Soc. of Korea, 22(4), 213 (1993)

[13] Park HH, Lee MH, Goto S, J. of the Japan Ins. of Metals, 65(1), 45 (2001)

[14] Maru HC, 'Stability of Iron and Nickel Base Alloys in MCFC', NACE 85 (1985) (1985)

[15] Yokokawa H, Saka N, Proc. 1990 Fuel Celll Seminar, AZ, 152 (1990)