Galvanic corrosion of aluminum alloy (Al2024) and copper in 1.0M hydrochloric acid solution

Ahmed Y. Musa; Abu Bakar Mohamad; Ahmed A. Al-Amiery; Lim Tien Tien

Korean Journal of Chemical Engineering, Vol.29, No.6, 818-822, June, 2012

DOI10.1007/s11814-011-0233-z Export Citation

Galvanic corrosion of aluminum alloy (Al2024) and copper in 1.0M hydrochloric acid solution

Ahmed Y. Musa^†, Abu Bakar Mohamad, Ahmed A. Al-Amiery, and Lim Tien Tien

Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia

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The corrosion of an aluminum alloy (Al2024) and copper in 1.0M HCl solution was investigated at 30, 40, 50 and 60 ℃ using open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) measurements. The galvanic corrosion of Al2024 and copper was studied using the zero resistance ammeter (ZRA) method. Galvanic current densities (Ig) and galvanic potential (Eg) were measured at 30 ℃ in 1.0M HCl solution. Thermodynamic parameters, such as activation energy (Ea), enthalpy of activation (ΔHa) and entropy of activation (ΔSa), were calculated and discussed. The results indicated that the corrosion rates of both Al2024 and copper increased with temperature. The ZRA results demonstrated that Al2024 is a sacrificial anode in 1.0M HCl solution when coupled with copper.

Keywords:Galvanic Corrosion;Thermodynamic Parameters;ZRA;Copper;Aluminum

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[2] Kim SJ, Ko JY, Korean J. Chem. Eng., 23(5), 847 (2006)

[3] Gray Pilgrim, 2010, Mild Steel Properties, http://www.buzzle.com/articles/mild-steel-properties.html.

[4] Ahn S, Song HJ, Park JW, Lee JH, Lee IY, Jang KR, Korean J. Chem. Eng., 27(5), 1576 (2010)

[5] Garcia-Romero A, Delgado A, Urresti A, Martin K, Sala JM, Corros. Sci., 51, 1263 (2009)

[6] Khaled KF, Corros. Sci., 52, 3225 (2010)

[7] Huynh N, Bottle SE, Notoya T, Schweinsberg DP, Corros.Sci., 42, 259 (2000)

[8] Obot IB, Obi-Egbedi NO, Umoren SA, Corros. Sci., 51, 276 (2009)

[9] Saenz de Mier M, Curioni M, Skeldon P, Thompson GE, Corros.Sci., 50, 3410 (2008)

[10] El Rehim SSA, Amin MA, Moussa SO, Ellithy AS, Mater. Chem. Phys., 112(3), 898 (2008)

[11] Rushing JC, Edwards M, Corros. Sci., 46, 1883 (2004)

[12] Fontana MG, Corrosion engineering, McGraw-Hill Book Company, New York (1986)

[13] Musa AY, Kadhum AAH, Takriff MS, Mohamad AB, Int. J. Surf. Sci. Eng., 5, 226 (2011)

[14] http://www.corrosionist.com/effect_temperature_corrosion_chemistry.htm.

[15] ASTM G1-3, Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens (2003)

[16] Assiongbon KA, Emery SB, Gorantla VRK, Babu SV, Roy D, Corros. Sci., 48, 372 (2006)

[17] Yurt A, Ulutas S, Dal H, Appl. Surf. Sci., 253(2), 919 (2006)

[18] Ashassi-Sorkhabi H, Shabani B, Aligholipour B, Seifzadeh D, Appl. Surf. Sci., 252(12), 4039 (2006)

[19] Musa AY, Mohamad AB, Kadhum AAH, Tabal YBY, Mater. Eng. Perf., 20, 394 (2011)

[20] Zhang D, Cai Q, Gao L, Lee KY, Corros. Sci., 50, 3615 (2008)

[21] Larabi L, Benali O, Mekelleche SM, Harek Y, Appl. Surf. Sci., 253(3), 1371 (2006)

[22] Musa AY, Kadhum AAH, Mohamad AB, Takriff MS, Daud AR, Kamarudin SK, Corros. Sci., 52, 526 (2010)

[23] Pujar MG, Parvathavarthini N, Dayal RK, Khatak HS, Inter.J. Electrochem. Sci., 3, 44 (2008)

[24] Zhao Z, Frankel GS, Corros., 63, 613 (2007)