Nickel fluoride as a surface activation agent for electroless nickel coating of anodized AA1050 aluminum alloy

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Kocabaş M., ÖRNEK C., Curioni M., CANSEVER N.

SURFACE & COATINGS TECHNOLOGY, vol.364, pp.231-238, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 364
  • Publication Date: 2019
  • Doi Number: 10.1016/j.surfcoat.2019.03.003
  • Journal Name: SURFACE & COATINGS TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.231-238
  • Yıldız Technical University Affiliated: Yes

Abstract

In this study, the use of nickel fluoride tetrahydrate (NiF2 center dot 4H(2)O) as a surface activator and sealant at the same time for the coating of electroless nickel-phosphorus (Ni-P) on anodized aluminum alloy AA1050 is proposed. The usage of the activator resulted in more efficient deposition of Ni-P, improved adhesion properties, and increased wear and friction behavior as opposed to non-activated conditions. Scanning electron microscopy (SEM) and confocal laser microscopy (CLM) analyses of ultramicrotome-cut cross sections of Ni-P coated specimens, surface-activated by NiF2 center dot 4H(2)O, revealed a more well-structured metal-coating interface as opposed to non-activated conditions.