Corrosión galvánica de aleaciones de magnesio AM50 y AZ91D modificadas con tierras raras en contacto con acero y aleaciones de aluminio

Marta Mohedano; Raúl Arrabal; Angel Pardo; Karín Paucar; M. Concepción Merino; Endzhe Matykina; Beatriz Mingo; Gerardo Garcés

doi:10.3989/revmetalm.002

Authors

Marta Mohedano Departamento de Ciencia de Materiales, Facultad de Químicas, Universidad Complutense
Raúl Arrabal Departamento de Ciencia de Materiales, Facultad de Químicas, Universidad Complutense
Angel Pardo Departamento de Ciencia de Materiales, Facultad de Químicas, Universidad Complutense
Karín Paucar Gabinete de Corrosión, Facultad de Ingeniería Química y Textil, Universidad Nacional de Ingeniería
M. Concepción Merino Departamento de Ciencia de Materiales, Facultad de Químicas, Universidad Complutense
Endzhe Matykina Departamento de Ciencia de Materiales, Facultad de Químicas, Universidad Complutense
Beatriz Mingo Departamento de Ciencia de Materiales, Facultad de Químicas, Universidad Complutense
Gerardo Garcés Centro Nacional de Investigaciones Metalúrgicas (CENIM). CSIC

DOI:

https://doi.org/10.3989/revmetalm.002

Keywords:

Galvanic corrosion, Magnesium alloys, Polarization, Weight loss

Abstract

Electrochemical and gravimetric measurements were used to examine the effects of neodymium and gadolinium additions on the galvanic corrosion behaviour of AM50 and AZ91D magnesium alloys coupled to A 570 Gr 36 carbon steel and AA2011-AA6082 aluminium alloys. Rare earth modified alloys showed Al₂Nd/Al₂Gd and Al-Mn-Nd/Al-Mn-Gd intermetallics, reduced area fraction of β-Mg₁₇Al₁₂ phase and increased corrosion resistance due to increased surface passivity and suppression of micro-galvanic couples. Neodymium and gadolinium additions improved the galvanic corrosion resistance of AM50 alloy, but were less effective in case of the AZ91D alloy. The AA6082 alloy was the most compatible material and the AA2011 alloy was the least compatible.

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References

Ambat, R., Aung, N.N., Zhou, W. 2000. Evaluation of Microstructural Effects on Corrosion Behaviour of AZ91D Magnesium Alloy. Corros. Sci. 42, 1433–1455.

Aoki, S., Kishimoto, K. 1991. Prediction of galvanic corrosion rates by the boundary element method. Math. Comput. Model. 15, 11–22.

Arrabal, R., Pardo, A., Merino, M.C., Mohedano, M., Casajus, P., Paucar, K., Garcés, G. 2012a. Effect of Nd on the corrosion behaviour of AM50 and AZ91D magnesium alloys in 3.5 wt.% NaCl solution. Corros. Sci. 55, 301–312.

Arrabal, R., Matykina, E., Pardo, A., Merino, M.C., Paucar, K., Mohedano, M., Casajus, P. 2012b. Corrosion behaviour of AZ91D and AM50 magnesium alloys with Nd and Gd additions in humid environments. Corros. Sci. 55, 351–362.

Arrabal, R., Pardo, A., Merino, M.C., Paucar, K., Mohedano, M., Casajus, P., Garcés, G. 2012c. Influence of Gd on the corrosion behaviour of AM50 and AZ91D magnesium alloys. Corrosion 68, 398–410.

ASTM G82-98. 1998. Standard guide for development and use of a galvanic series for predicting galvanic corrosion performance, ASTM 3.02.

Bellucci, F. 1991. Galvanic corrosion between nonmetallic composites and metals. Corrosion 47, 808–819.

Campestrini, P., Westing, E.P.M., Rooijen, H.W., Wit, J.H.W. 2000. Relation between microstructural aspects of AA2024 and its corrosion behaviour investigated using AFM scanning potential technique. Corros. Sci. 42, 1853–1861.

Desphande, K.B. 2010a. Validated numerical modelling of galvanic corrosion for couples: Magnesium alloy (AE44)–mild steel and AE44–aluminium alloy (AA6063) in brine solution. Corros. Sci. 52, 3514–3522.

Desphande, K.B. 2010b. Experimental investigation of galvanic corrosion: Comparison between SVET and immersion techniques. Corros. Sci. 52, 2819–2826.

Desphande, K.B. 2011. Numerical modeling of micro-galvanic corrosion. Electrochim. Acta. 56, 1737–1745.

Dong, C.F., Xiao, K., Li, X.G., Cheng, Y.F. 2010. Erosion accelerated corrosion of a carbon steel–stainless steel galvanic couple in a chloride solution. Wear 270, 39–45.

Friedrich, H., Schuman, S. 2001. Research for “a new age of magnesium” in the automotive industry. J. Mater. Process. Technol. 117, 276–281.

Guo, F., Li, P., Gao, X., Xu, J. 2010. Study on solid solution and aging process of AZ91D magnesium alloy with cerium. J. Rare Earth 28, 948–951.

Jia, J., Song, G.L., Atrens, A. 2006. Influence of geometry on galvanic corrosion on AZ91D coupled to steel. Corros. Sci. 48, 2133–2153.

Liu, C., Chen, D.L., Bhole, B., Cao, X., Jahazi, M. 2009a. Polishing-assisted galvanic corrosion in the dissimilar friction stir welded joint of AZ31 magnesium alloy to 2024 aluminum alloy. Mater. Charac. 60, 370–376.

Liu, N., Wang, J., Wang, V., Wu, Y., Wang, L. 2009b. Electrochemical corrosion behavior of Mg–5Al–0.4Mn–xNd in NaCl solution. Corros. Sci. 51, 1328–1333.

Liu, W., Cao, F., Chang, Z., Zhang, J. 2009c. Effect of rare earth element Ce and La on corrosion behavior of AM60 magnesium alloy. Corros. Sci. 51, 1334–1343.

Liu, M., Uggowitzeru, J., Nagasekhar, A.V., Schmutz, P., Easton, M., Song, G.L., Atrens, A. 2009d. Calculated phase diagrams and the corrosion of die-cast Mg–Al alloys. Corros. Sci., 51, 602–619.

Liu, W., Cao, F., Chen, A., Chang, L., Zhang, J., Cao, C. 2010. Corrosion behaviour of AM60 magnesium alloys containing Ce or La under thin electrolyte layers. Part 1: Microstructural characterization and electrochemical behaviour. Corros. Sci. 52, 627–638.

Luo, A.A. 2004. Recent magnesium alloy development for elevated temperature applications. Int. Mater. Rev. 49, 13–30.

Makar, G.L., Kruger, J. 1990. Corrosion studies of rapidly solidified magnesium alloys. J. Electrochem. Soc. 137, 414–421.

Makar, G.L., Kruger, J. 1993. Corrosion of magnesium. Int. Mater. Rev. 38, 138–153.

Mc Cafferty, E. 1976. Calculation of current distribution in circular corrosion cells. Corros. Sci. 16, 186–190.

Melville, P.H. 1980. Effect of the distribution of current within a pit on the variation in potential in the vicinity of the pit. J. Electrochem. Soc.127, 864–868.

Mercer, W.E., Hillis, J.E. 1992. SAE Technical Paper Series N° 920073, Detroit, USA.

Nayyeri, M., Khomamizadeh, F. 2011. Effect of RE elements on the microstructural evolution of as cast and SIMA processed Mg–4Al alloy. J. Alloys Compd. 509, 1567–1572.

Niu, J., Chen, Q., Xu, N., Wei, Z. 2008. Effect of combinative addition of strontium and rare earth elements on corrosion resistance of AZ91D magnesium alloy. Trans. Nonferrous Met. Soc. China 18, 1058–1064.

Nordlien, J.H., Nisancioglu, K., Ono, S., Musuko, N. 1997. Morphology and structure of water–formed oxides on ternary MgAl alloys. J. Electrochem. Soc. 144, 461–466.

Osorio, W., Freire, C., Caram, R., Garcia, A. 2012. The role of Cu-based intermetallics on the pitting corrosion behavior of Sn-Cu, Ti-Cu and Al-Cu alloys. Electrochim. Acta 77, 189–197.

Pardo, A., Merino, M.C., Coy, A.E., Arrabal, R., Viejo, F., Matykina, E. 2008. Corrosion behaviour of magnesium/ aluminium alloys in 3.5 wt.% NaCl. Corros. Sci. 50, 823– 834.

Rosalbino, F., Angelini, E., Negri, S., Saccone, A., Delfino, S. 2005. Effect of erbium addition on the corrosion behaviour of Mg–Al alloys. Intermetallics 13, 55–60.

Senf, J., Broszeit, E., Gugau, M., Berger, C. 2000. TMS, Magnesium Technology 2000, Ed. H.I. Kaplan, Nashville, USA, pp. 137–142.

Shi, Z., Song, G.L., Atrens, A. 2005. Influence of the β phase on the corrosion performance of anodised coatings on magnesium–aluminium alloys. Corros. Sci. 47, 2760–2777.

Shi, Z., Liu, M., Atrens, A. 2010. Measurement of the corrosion rate of magnesium alloys using Tafel extrapolation. Corros. Sci. 52, 579–588.

Shi, Z., Jia, J., Atrens, A. 2012. Galvanostatic anodic polarisation curves and galvanic corrosion of high purity Mg in 3.5% NaCl saturated with Mg(OH)2. Corros. Sci. 60, 296–308.

Skar, J.I. 1999. Corrosion and corrosion prevention of magnesium alloys. Materials and Corrosion 50, 2–6.

Skar, J.I., Albricht, D. 2002. TMS, Magnesium Technology 2002, Ed. H.I. Kaplan, Warrendale, USA, pp. 255–261.

Song, G.L., Atrens, A. 1999. Corrosion mechanisms of magnesium alloys. Adv. Eng. Mater. 1, 11–33.

Song, G.L., Atrens, A. 2000. Corrosion and Environmental Degradation of Materials: Volume 19 of the Series: Materials Science and Technology, Ed. Wiley-VCH Verlag GmbH, USA.

Song, G.L., Johannesson, B., Hapugoda, S., StJohn, D. 2004. Galvanic corrosion of magnesium alloy AZ91D in contact with an aluminium alloy, steel and zinc. Corros. Sci. 46, 955–977.

Song, G.L. 2005. Recent progress in corrosion and protection of magnesium alloys. Adv. Eng. Mater. 7, 563–586.

Song, Y.L., Liu, Y.H., Yu, S.R., Zhu, X.Y. 2007. Wang, S.H., Effect of neodymium on microstructure and corrosion resistance of AZ91 magnesium alloy. J. Mater. Sci. 42, 4435–4440.

Song, G.L. 2010. Potential and current distributions of onedimensional galvanic corrosion systems. Corros. Sci. 52, 455–480.

Splinter, S.J., McIntyre, N.S. 1994. The initial interaction of water vapour with Mg-Al alloy surfaces at room temperature. Surf. Sci. 314, 157–171.

Vargel, C. 2004. Corrosion of Aluminium, Ed. Elsevier, San Diego, USA, pp. 149–164.

Yamasaki, M., Hayashi, n., Izumi, S., Kawamura, Y. 2007. Corrosion behavior of rapidly solidified Mg–Zn–rare earth element alloys in NaCl solution. Corros. Sci. 49, 255–262.

Yue, X., Sha, L. 2007. Corrosion resistance of AZ91D magnesium alloy modified by rare earths-laser surface treatment. J. Rare Earth. 25, 201–203.

Zeng, R., Zhang, J., Huang, W., Dietzel, W., Kainer, K.U., Blawert, C., Ke, W. 2006. Review of studies on corrosion of magnesium alloys. Trans. Nonferrous Met. Soc. China 16, 763–771.

Zhang, J.H., Wang, J., Qiu, X., Zhang, D.P., Tian, Z., Niu, X.D., Tang, D.X., Meng, J. 2008. Effect of Nd on the microstructure, mechanical properties and corrosion behavior of diecast Mg–4Al-based alloy. J. Alloys Compd. 464, 556–564.

Zhang, J., Niu, X., Qiu, X., Liu, K., Nan, C., Tang, D., Meng, J. 2009. Effect of yttrium-rich misch metal on the microstructures, mechanical properties and corrosion behavior of die cast AZ91 alloy. J. Alloys Compd. 471, 322–330.

Zhang, T., Shao, Y., Meng, G., Cui, Z., Wang, F. 2011. Corrosion of hot extrusion AZ91 magnesium alloy: I-relation between the microstructure and corrosion behavior. Corros. Sci. 53, 1960–1968.

Zhao, M., Liu, M., Song, G.L., Atrens, A. 2008. Influence of the β-phase morphology on the corrosion of the Mg alloy AZ91. Corros. Sci. 50, 1939–1953.