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Anodic behavior of Al–Zn–In sacrificial anodes at different concentration of zinc and indium

  • Ahmad Keyvani , Mohsen Saremi and Mohammad Reza Saeri
Published/Copyright: May 31, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 103 Issue 12

Abstract

Al-Zn-In anodes show better performance due to the beneficial effects of Zn and In on prevention of aluminum passivity and producing a homogeneous structure for uniform corrosion of the anodes. However, there are different views about the optimum concentration of each element in the anode. In this study, the anodic behavior of Al-Zn-In alloy with different concentrations of zinc from 1 to 6 wt.% and indium from 0.01 to 0.05 wt.% are studied. The NACE efficiency test and polarization are used in 3 wt.% NaCl solution for corrosion characterization. The results showed that zinc and indium change the anode potential to more active potentials and improve the microstructure uniformity of anodes. The latter leads to more uniform corrosion. Optimum concentrations of zinc (5 wt.%) and indium (0.02 wt.%) were found in this respect.

Keywords: Aluminum; Zinc; Indium; Sacrificial anode; Polarization
* Correspondence address, Ahmad Keyvani, Dep. of Mater. Eng., Faculty of Eng. Shahrekord University P.O. Box 115, ShahrekordIran. Tel.: +982161114117, Fax: +982166461024, E-mail:

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Received: 2011-3-20
Accepted: 2012-6-18
Published Online: 2013-05-31
Published in Print: 2012-12-01

© 2012, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110817
Keywords for this article
Aluminum; Zinc; Indium; Sacrificial anode; Polarization

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Effect of texture on grain growth in an interstitial-free steel sheet
  5. Nanoindentation of pseudoelastic NiTi containing Ni4Ti3 precipitates
  6. Isochronal annealing of a deformed Fe-7.5 mass.% Si-steel
  7. Modelling of three powder compaction laws for cold die pressing
  8. Surface tension and density of liquid Sn–Ag–Cu alloys
  9. Thermodynamics of liquid Au–Sb–Sn
  10. Phase relations in the ZrO2-Sm2O3-Y2O3-Al2O3 system: experimental investigation and thermodynamic modelling
  11. Contributions of phase composition and defect structure to the long term stability of Li/MgO catalysts
  12. First and second differentials of the ultrasonic parameter as an effective tool to identify phase transitions in R1-xAxMnO3 perovskites
  13. Surface oxide layer formation on Au-Pt-Pd-Si alloys for dental resin restorations
  14. On the high temperature stability of γ-Al2O3/Ti0.33Al0.67N coated WC–Co cutting inserts
  15. Optimizing composition for (Nd, Pr)–Nb–Fe–B hard magnetic nanocomposites
  16. Simple ionic-liquid assisted method for preparation of Cd1-xZnxS nanoparticles with improved photocatalytic activity
  17. A low-cost route for synthesizing tungsten disulfide film composites from abundant sprayed oxides: Technique and characterization
  18. Anodic behavior of Al–Zn–In sacrificial anodes at different concentration of zinc and indium
  19. Short Communications
  20. Effect of molybdenum addition on fracture toughness and hardness of Fe2B in Fe–B–C cast alloy
  21. DGM News
  22. DGM News
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