Corrosion behaviour of the Al-2.1–Mg-1.8–Si alloy in chloride solution

  • Yaya Zheng
  • Binghui LuoEmail author
  • Chuan He
  • Zhiwei Ren
  • Shuai Wang
  • Yuan Yin


The corrosion behaviours of Al–Mg–Si alloys were studied in different \(\hbox {Cl}^{-}\) concentrations by means of scanning electron microscopy, transmission electron microscopy and electrochemical experiments. The results show that the corrosion behaviours of Al–Mg–Si alloys are closely related to the \(\hbox {Cl}^{-}\) concentration. With an increase in \(\hbox {Cl}^{-}\) concentration, the corrosion rate increases sharply by facilitating the process of chemical and electrochemical reactions. In 2.0 wt.% NaCl solution, slight pitting corrosion occurred around the MgSi phase, but corrosion trenching was not found around the Fe–Mn–Si phase. In 3.5 wt.% NaCl solution, the alloy appeared localized corrosion dominated by intergranular corrosion attack. In 5.0 wt.% NaCl solution, the alloy presented serious overall corrosion, and the passivation platform of the polarization was not obvious. Furthermore, an appropriate corrosion mechanism according to polarization and electrochemical impedance spectroscopy was proposed for the Al–Mg–Si alloy in NaCl solution. In addition, the corrosion rate influenced by different \(\hbox {Cl}^{-}\) concentrations was discussed in detail.


Al–Mg–Si alloy corrosion behaviour \(\hbox {Cl}^{-}\) passivation film 


  1. 1.
    Verma C, Ebenso E E and Quraishi M A 2017 J. Mol. Liq. 233 403CrossRefGoogle Scholar
  2. 2.
    Liu H W, Xu D, Dao A Q, Zhang G, Lv Y L and Liu H F 2015 Corros. Sci. 101 84CrossRefGoogle Scholar
  3. 3.
    Tomashov N D 1958 Corrosion 14 39CrossRefGoogle Scholar
  4. 4.
    Farhad B, Mohiedin B H, Samin S, Yadollah Y, Golsa Mortazavi M and Seo Y 2016 Met. Mater. Int. 22 609CrossRefGoogle Scholar
  5. 5.
    Ai Z Y, Sun W, Jiang J Y, Song D, Ma H, Zhang J C et al 2016 Materials 9 749CrossRefGoogle Scholar
  6. 6.
    Li S J, Sun W, Yang Z Q, Zhang X Y, Wang L D and Liu G C 2018 Electrochim. Acta 292 425CrossRefGoogle Scholar
  7. 7.
    Fermamdes J C S, Picciochi R, Cunhabelo M D, Silva T M, Ferreira M G S and Fonseca I T E 2004 Electrochim. Acta 49 701Google Scholar
  8. 8.
    Zou Y, Liu Q, Jia Z, Yuan Y, Ding L P and Wang X L 2017 Appl. Surf. Sci. 405 489CrossRefGoogle Scholar
  9. 9.
    Lim A B Y, Neo W J, Yauw O, Chylak B, Gan C L and Chen Z 2016 Microelectron. Reliab. 56 155CrossRefGoogle Scholar
  10. 10.
    Zheng Y, Xiao W L, Ge S J, Zhao W T, Hanada S J and Ma C L 2015 J. Alloys Compd. 649 291CrossRefGoogle Scholar
  11. 11.
    Zheng Y Y, Luo B H, Bai Z H, Wang J and Yin Y 2017 Metals (Basel) 7 387CrossRefGoogle Scholar
  12. 12.
    Nabhan D, Kapusta B, Billaud P, Colas K, Hamon D and Dacheux N 2015 J. Nucl. Mater. 457 196CrossRefGoogle Scholar
  13. 13.
    Li Y, Hung Y C, Du Z Y, Xiao Z B and Jia G Z 2018 Phys. Metals Metallogr. 119 339CrossRefGoogle Scholar
  14. 14.
    Chung I C, Chung C K and Su Y K 2017 Surf. Coat. Technol. 313 299CrossRefGoogle Scholar
  15. 15.
    Bai Z H, Xia Y M, Qiu F, Liu Y Y, Hu W and Jiang Q C 2014 Appl. Surf. Sci. 307 153CrossRefGoogle Scholar
  16. 16.
    Tan Y J, Bailey S and Kinsella B 1996 Corros. Sci. 38 1545CrossRefGoogle Scholar
  17. 17.
    Guan L, Zhou Y, Zhang B, Wang J Q, Han E H and Ke W 2016 Corros. Sci. 103 255CrossRefGoogle Scholar
  18. 18.
    Huang W, Hurley B L, Yang F and Buchheit R G 2016 Electrochim. Acta 199 242CrossRefGoogle Scholar
  19. 19.
    Shi Y, Liu L, Zhang, L, Li R and Yu B 2017 J. Iron Steel Res. Int. 24 957CrossRefGoogle Scholar
  20. 20.
    Liu Y, Zhou X, Thompson G E, Hashimoto T, Scamans G M and Afseth A 2007 Acta Mater. 55 353CrossRefGoogle Scholar
  21. 21.
    Amina M A, Abd El-Rehima S S and El-Lithy A S 2010 Electrochim. Acta 55 5996CrossRefGoogle Scholar
  22. 22.
    Thomas S, Medhekar N V, Frankel G S and Birbilis N 2015 Curr. Opin. Solid St M. 19 85CrossRefGoogle Scholar
  23. 23.
    Amin M A 2010 Corros. Sci. 52 3243CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.College of Materials Science and EngineeringCentral South UniversityChangshaPeople’s Republic of China

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