용융아연 도금욕중 Al농도 센서의 기준전극에 대한 연구

정우광; 정세혁; W.G. Jung; S.H. Jung

Korean Journal of Materials Research, Vol.16, No.2, 129-136, February, 2006

DOI10.3740/MRSK.2006.16.2.129 Export Citation

용융아연 도금욕중 Al농도 센서의 기준전극에 대한 연구

A Study on the Reference Electrode for Al Concentration Sensor in Zinc Galvanizing Melt

정우광 ^†, 정세혁¹

국민대학교 공과대학 신소재공학부
¹국민대학교 대학원 신소재공학과

W.G. Jung^†, and S.H. Jung¹

School of Advanced Materials Engineering, Kookmin University, Korea
¹Department of Advanced Materials Engineering, Graduate School of Kookmin University, Seoul, Korea

E-mail:

In order to get basic information on the reference electrode material for the long life Al concentration sensor in zinc galvanizing melt, the workability and stability of fluorine potential cell with CaF 2 single crystal electrolyte were examined carefully at constant temperature for six kinds of reference materials (Zn, Sn, Cd, Bi, Pb, Al-Sn alloy + fluorides). Good workability and stability of the sensor were found in sensor with Bi+BiF 3 reference electrode. The Al sensor with Bi+BiF 3 reference electrode was assembled and was tested in Zn-Al melt with different Al concentration. The EMF was changed rapidly with the change of Al concentration and was stabilized in a short time. Thus the response of EMF was satisfactory for CaF 2 sensor. The correlationship between EMF from the sensor and logarithm of Al concentration has been derived from the least square regression method. E/mV=57.515log[wt% Al]+1883.3 R=0.9717 ( 0.013≤[wt ) The EMF from Al sensor was increased linearly against logarithm of [wt% Al]. The fluorine potential of Zn-Al melt was also calculated to be in the range of 10 ?60 ∼10 ?61 Pa for the present experiemental condition.

Keywords:zinc galvanizing;Al concentration;CaF 2;fluorine potential;reference electrode

[References]

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Ikeda T, Okada H, Suemune Y, Kawaguchi K, CAMP-ISIJ, 4, 663 (1991)
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Alcock CB, Li B, Solid State Ionic., 39, 245 (1990)
Goto K, Tetsu-to-Hagane, 62, 1265 (1976)
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Matsubra S, Tsutac T, Nakamoto K, Katayama I, Iida T, Mat. Trans. JIM, 36(10), 1225 (1995)
Katayama I, Iseda A, Kemori A, Kozuka Z, Mat. Trans. JIM, 23, 556 (1982)
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Massalski TB, Okamoto H, Subramanian PR, Kacprzak L, Binary Alloy Phase Diagram, 2nd Ed., ASM International, Materials Park, OH, 215 (1990) (1990)
Barin I, Thermochemical Data of Pure Substance, VCH Verlags Gesel m.b.H., Weinheim (1989) (1989)

[Related Articles]

[1] Yamaguchi H, Hisarnatu T, Tetsu-to-Hagane, 59, 131 (1973)

[2] Ikeda T, Okada H, Suemune Y, Kawaguchi K, CAMP-ISIJ, 4, 663 (1991)

[3] Nakamori T, Toki T, Abe K, CAMP-ISIJ, 3, 1567 (1990)

[4] Kiukkola K, Wagner C, J. Electrochem Soc., 104(6), 397 (1957)

[5] Steele BCH, Alcock CB, Trans. Met. Soc. AIME, 233, 1359 (1965)

[6] Alcock CB, Li B, Solid State Ionic., 39, 245 (1990)

[7] Goto K, Tetsu-to-Hagane, 62, 1265 (1976)

[8] Yamaguchi S, Fukatsu N, Kimura H, Ueda J, Iguchi Y, Ohashi T, CAMP-ISIJ, 4, 669 (1991)

[9] Kimura H, Deda J, Kawamura M, Yamaguchi S, Fukatsu N, Materia Japan, 34, 492 (1995)

[10] Schmalzried H, Z. Phys. Chem. N.F., 38, 870 (1963)

[11] Katayama I, Matsushima S, Kozuka Z, Mat. Trans. JIM, 31(9), 789 (1990)

[12] Katayama I, Matsushima S, Kozuka Z, Mat. Trans. JIM, 32(10), 943 (1991)

[13] Matsubra S, Tsutac T, Nakamoto K, Katayama I, Iida T, Mat. Trans. JIM, 36(10), 1225 (1995)

[14] Katayama I, Iseda A, Kemori A, Kozuka Z, Mat. Trans. JIM, 23, 556 (1982)

[15] Katayama I, Iida T, ISIJ International, 35(5), 512 (1995)

[16] Massalski TB, Okamoto H, Subramanian PR, Kacprzak L, Binary Alloy Phase Diagram, 2nd Ed., ASM International, Materials Park, OH, 215 (1990) (1990)

[17] Barin I, Thermochemical Data of Pure Substance, VCH Verlags Gesel m.b.H., Weinheim (1989) (1989)