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Journal of Materials Engineering and Performance

, Volume 28, Issue 8, pp 5047–5062 | Cite as

Hot Corrosion Behavior of Ni20Cr Alloy in NaVO3 Molten Salt

  • P. D. Silva-Leon
  • O. Sotelo-MazonEmail author
  • G. Salinas-Solano
  • J. Porcayo-Calderon
  • J. G. Gonzalez-Rodriguez
  • S. Valdez
  • L. Martinez-Gomez
Article
  • 83 Downloads

Abstract

The hot corrosion behavior of Ni20Cr alloy was evaluated in NaVO3 at temperatures of up to 700 °C and compared to Inconel 600. The performance of both the alloys was evaluated using electrochemical measurements, such as potentiodynamic polarization, linear polarization resistance, and electrochemical impedance spectroscopy measurements, as well as a cyclic corrosion test. The results show that the Ni20Cr alloy has better corrosion performance than the Inconel 600. The better performance of the Ni20Cr alloy was due to its ability to develop a stable protector oxide (Cr2O3) on its surface.

Keywords

cyclic corrosion electrochemical techniques hot corrosion Ni20Cr alloy oxide 

Notes

Acknowledgments

O. Sotelo-Mazon is thankful to the postdoctoral fellowship DGAPA-UNAM. Jose Juan Ramos Hernandez is thanked for the support in the electron microscopy analysis.

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Copyright information

© ASM International 2019

Authors and Affiliations

  • P. D. Silva-Leon
    • 1
  • O. Sotelo-Mazon
    • 2
    Email author
  • G. Salinas-Solano
    • 2
  • J. Porcayo-Calderon
    • 3
  • J. G. Gonzalez-Rodriguez
    • 3
  • S. Valdez
    • 2
  • L. Martinez-Gomez
    • 2
    • 4
  1. 1.Facultad de Ciencias Químicas e IngenieríaUniversidad Autónoma del Estado de MorelosCuernavacaMexico
  2. 2.Instituto de Ciencias FísicasUniversidad Nacional Autónoma de México (UNAM)CuernavacaMexico
  3. 3.CIICApUniversidad Autónoma del Estado de MorelosCuernavacaMexico
  4. 4.Corrosion y Protección (CyP)Mexico CityMexico

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