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2014-04-25 - Article/Dans un journal sans peer-review - Anglais - 9 page(s)

Vitry Véronique , Sens Adeline, Delaunois Fabienne , "Comparison of various electroless nickel coatings on steel: structure, hardness and abrasion resistance" in Materials Science Forum, 783-786, 1405-1413

  • Edition : Trans Tech Publications (Switzerland)
  • Codes CREF : Chimie des surfaces et des interfaces (DI1327), Tribologie (DI1269), Métallographie (DI2330)
  • 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) Several electroless nickel deposits, on steel substrate, of varying chemistry were investigated in the as-plated and heat-treated condition: 3 nickel-phosphorous (low, mid and high P) and 2 nickel-boron (nickel-boron (lead) and nickel-boron (thallium)). Samples were characterized by SEM and X-ray diffraction. They were then submitted to Knoops microhardness testing and Taber abrasion tests, with abrasive CS-10 wheels, as well as scratch testing to investigate their mechanical properties and wear resistance. Hardness and wear resistance of all deposits were improved by heat treatment, but the best candidate was the Nickel-boron (lead), with a hardness over 1100 hk50 after heat treatment and a Taber Wear Index of 6. Scratch testing allowed identifying the damage mechanisms of the coated systems.