Corrosion Behavior of Ni-Fe-Mo Deposits Obtained under Different Electrodeposition Conditions


Solmaz R., Karahan B. D.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, vol.30, no.8, pp.5593-5602, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 30 Issue: 8
  • Publication Date: 2021
  • Doi Number: 10.1007/s11665-021-05805-1
  • Journal Name: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Applied Science & Technology Source, Aquatic Science & Fisheries Abstracts (ASFA), Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.5593-5602
  • Keywords: corrosion resistance, cyclic voltammetry, electrodeposition, Ni&#8211, Fe&#8211, Mo alloys, tafel, INDUCED CODEPOSITION, ALLOY COATINGS, THIN-FILM, HYDROGEN EVOLUTION, CHROMIUM COATINGS, MOLYBDENUM, NICKEL, RESISTANCE, NUCLEATION, MECHANISM
  • Istanbul Technical University Affiliated: Yes

Abstract

Ternary Ni-Fe-Mo coatings have been proposed for anti-corrosion applications to replace chromium coating. To analyze the effects of deposition current and duration six different Ni-Fe-Mo films have been electrodeposited on copper foils. Their morphologies, structures, and chemical compositions of the films have been characterized. Potentiodynamic polarization is applied on each coating and electrochemical impedance spectroscopy is applied to discuss their corrosion resistances. Ni-Fe-Mo film that is produced at the lowest current density (5 mA.cm(-2)) for 5 min. exhibits a more positive corrosion potential and higher charge transfer resistance. To shed some lights on aging mechanism, the film has been aged for 70 days. The enhanced protective properties of the film is attributed to its fine, crack free morphology with high Mo content. The existences of Fe2O3, MoO2, MoO3, and NiO in the passive layer substantiate the improved barrier protection ability of the film.