The effect of Cu alloying addition on the corrosion resistance of iron aluminide Fe3Al has been investigated. In this work, the corrosion behaviour of Fe3Al-5Cu (at%) alloys has been assessed by open circuit potential, potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) measurements carried out in a 0.5 M H2SO4 solution, without stirring and in contact with the air. For comparison, the electrochemical tests have also been performed on Fe3Al intermetallic. The obtained electrochemical results indicate that iron aluminide Fe3Al-5Cu exhibits superior corrosion resistance as compared to Fe3Al. This improvement may be ascribed to the formation of a copper-enriched surface layer which shows higher protective effectiveness than that formed on Fe3Al intermetallic.

Effect of copper alloying addition on the electrochemical corrosion behaviour of Fe3Al intermetallic in sulphuric acid solution / Rosalbino, Francesco; Carlini, R.; Zanicchi, G.; Scavino, Giorgio. - In: MATERIALS AND CORROSION. - ISSN 1521-4176. - ELETTRONICO. - 67:10(2016), pp. 1042-1048. [10.1002/maco.201608854]

Effect of copper alloying addition on the electrochemical corrosion behaviour of Fe3Al intermetallic in sulphuric acid solution

ROSALBINO, Francesco;SCAVINO, Giorgio
2016

Abstract

The effect of Cu alloying addition on the corrosion resistance of iron aluminide Fe3Al has been investigated. In this work, the corrosion behaviour of Fe3Al-5Cu (at%) alloys has been assessed by open circuit potential, potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) measurements carried out in a 0.5 M H2SO4 solution, without stirring and in contact with the air. For comparison, the electrochemical tests have also been performed on Fe3Al intermetallic. The obtained electrochemical results indicate that iron aluminide Fe3Al-5Cu exhibits superior corrosion resistance as compared to Fe3Al. This improvement may be ascribed to the formation of a copper-enriched surface layer which shows higher protective effectiveness than that formed on Fe3Al intermetallic.
File in questo prodotto:
File Dimensione Formato  
maco201608854.pdf

non disponibili

Descrizione: Articolo Principale
Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 824.65 kB
Formato Adobe PDF
824.65 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2654697
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo