Nickel–cobalt alloys having settled composition can be produced by electrolysis after optimising process operative conditions. In this work nickel–cobalt coatings on 1050 Al net, obtained by electrodeposition under galvanostatic conditions, were investigated. Ni–Co coatings were electrowon, from an acidic sulphate bath containing 40 g/L Ni and Co in the range 0.1–16 g/L, at 60 °C temperature and 300 A/m2 average current density. The experimental results highlight a linear correlation between bath and deposit Co/Ni ratio, with slope change for Co concentration in the electrolyte higher than 3 g/L. Morphology, structure and electrochemical properties are strictly correlated among themselves and with the composition of the coating.

Composition, morphology, structural aspects and electrochemical properties of Ni Co alloy coatings

Imperatori P
2011

Abstract

Nickel–cobalt alloys having settled composition can be produced by electrolysis after optimising process operative conditions. In this work nickel–cobalt coatings on 1050 Al net, obtained by electrodeposition under galvanostatic conditions, were investigated. Ni–Co coatings were electrowon, from an acidic sulphate bath containing 40 g/L Ni and Co in the range 0.1–16 g/L, at 60 °C temperature and 300 A/m2 average current density. The experimental results highlight a linear correlation between bath and deposit Co/Ni ratio, with slope change for Co concentration in the electrolyte higher than 3 g/L. Morphology, structure and electrochemical properties are strictly correlated among themselves and with the composition of the coating.
2011
Istituto di Struttura della Materia - ISM - Sede Roma Tor Vergata
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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/20.500.14243/23612
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 74
social impact