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

Solmaz R., Karahan B. D.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, cilt.30, sa.8, ss.5593-5602, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 8
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1007/s11665-021-05805-1
  • Dergi Adı: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
  • Derginin Tarandığı İndeksler: 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
  • Sayfa Sayıları: ss.5593-5602
  • Anahtar Kelimeler: 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
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

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.