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2014-05-16 - Colloque/Article dans les actes sans comité de lecture - Anglais - 25 page(s)

Vitry Véronique , Delaunois Fabienne , "Corrosion protection of steel and aluminium alloys by electroless nickel-boron and duplex electroless NiP-NiB coatings." in IMTCE 2014 - International Symposium on Corrosion & Materials Degradation 2014, 193-218, Kuala Lumpur, Malaisie, 2014

  • Codes CREF : Chimie des surfaces et des interfaces (DI1327), Métallurgie (DI2310), Electrochimie hautes et basses températures (DI1326), Corrosion des matériaux (DI2114)
  • Unités de recherche UMONS : Métallurgie (F601)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
  • Centres UMONS : Ingénierie des matériaux (CRIM)
Texte intégral :

Abstract(s) :

(Anglais) Electroless nickel-boron (NiB) coatings and duplex electroless nickel-phosphorous/nickel-boron (NiP/NiB) coatings can provide protection against corrosion to steel and aluminium alloys substrates. Nickel-boron coatings with a moderate thickness (close to 25 µm) were synthesized directly on steel substrate. Duplex nickel-phosphorous/nickel-boron coatings (with a thin nickel-phosphorous under layer of 5 to 8 µm) were also synthesized on both steel and aluminium alloys. The systems were characterized by electrochemical methods (potentiodynamic polarization), mainly in aqueous NaCl (0.1 M) but also in other solutions, and by SEM observation after electrochemical tests. The effects of heat treatment, duplex coating and replenishment during the plating process were observed. Comparisons were made with single layer nickel-phosphorous.

Notes :
  • (Anglais) This paper is linked to an invited lecture (oral) given at the IMTCE conference