Hot corrosion behavior of feal intermetallic compound modified with ti, and cr in molten salt mixture KCL-ZnCl2

R. A. Rodríguez-Diaz*, J. Uruchurtu-chavarín, J. Porcayo-Calderon, J. M. López-Oglesby, M. E. Mendoza, J. J. Ramos-Hernández, S. Valdez, A. Bedolla

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The hot corrosion behavior of Fe40Al intermetallic alloyed with 2.5 at. % Cr and Ti in KCl-ZnCl2 (1:1M) at 45°C has been evaluated by using electrochemical techniques. Techniques included potentiodynamic polarization curves, linear polarization resistance (LPR)and electrochemical impedance spectroscopy (EIS) measurements. Furthermore thermodynamic stability phase diagrams were calculated and elaborated in order to describe the corrosion process. Results have shown that additions of both Cr and Ti increased the corrosion rate, besides the alloy was passivated by adding Cr. Addition of Ti induced a better corrosion performance than Fe40Al2.5Cr alloy, this behavior is due to the formation of a non-porous aluminum oxide layer modified with titanium oxide. Corrosion behavior is explained in terms of the stability of the corrosion products formed film.

Original languageEnglish
Pages (from-to)7257-7273
Number of pages17
JournalInternational Journal of Electrochemical Science
Volume8
Issue number5
StatePublished - 2013
Externally publishedYes

Keywords

  • Electrochemical techniques
  • Fe40Al intermetallic
  • Hot corrosion

Fingerprint

Dive into the research topics of 'Hot corrosion behavior of feal intermetallic compound modified with ti, and cr in molten salt mixture KCL-ZnCl2'. Together they form a unique fingerprint.

Cite this