Journal of Materials Engineering and Performance

, Volume 27, Issue 9, pp 4481–4488 | Cite as

Understanding the Effect of Tungsten on Corrosion Behavior of AlCuCrFeMnWx High-Entropy Alloys in 3.5 wt.% NaCl Solution

  • Devesh Kumar
  • Ornov Maulik
  • V. K. Sharma
  • Y. V. S. S. Prasad
  • Vinod KumarEmail author


The electrochemical study of AlCuCrFeMnWx (x = 0, 0.05, 0.1, 0.5, 1 mol) high-entropy alloys (HEA) is performed in 3.5 wt.% NaCl solution at room temperature (25 °C). The potentiodynamic polarization curve of the AlCuCrFeMnWx (x = 0, 0.05, 0.1, 0.5, 1 mol) alloys obtained in 3.5 wt.% NaCl solution shows that the corrosion resistance of the tungsten (W)-free HEA is lower than the alloys containing W. It is observed that W forms solid WO3 layer in the outer region of the film in a 3.5 wt.% NaCl. The scanning electron microscopy and infrared spectroscopy confirmed the electrochemical results. The electrochemical impedance spectroscopy of these alloys had one capacitive loop, which represented the presence of electrical double layer.


corrosion high-entropy alloys polarization 



Authors are thankful to BRNS Project No. 34/20/01/2014-BRNS-0339, Mumbai (India), for financial assistance and Prof. V.S.Raja, Professor, IIT Bombay, for providing equipment for electrochemical study.


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Copyright information

© ASM International 2018

Authors and Affiliations

  • Devesh Kumar
    • 1
  • Ornov Maulik
    • 2
  • V. K. Sharma
    • 1
  • Y. V. S. S. Prasad
    • 1
  • Vinod Kumar
    • 3
    Email author
  1. 1.Department of Metallurgical and Materials EngineeringMNITJaipurIndia
  2. 2.Anton Parr Private India LtdGurugramIndia
  3. 3.Discipline of Metallurgy Engineering and Materials ScienceIIT IndoreIndoreIndia

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