Synthesis and Tribocorrosion Performances of Multilayer (Ta/ZrN)n Coatings


Creative Commons License

Beliardouh N. E. , Ramoul C. E. , Nouveau C., Kaleli E. H. , Montagne A.

Thin Solid Films, vol.0040609022001043, no.22, pp.1-36, 2022 (Journal Indexed in SCI Expanded)

  • Publication Type: Article / Article
  • Volume: 0040609022001043 Issue: 22
  • Publication Date: 2022
  • Doi Number: 10.1016/j.tsf.2022.139184
  • Title of Journal : Thin Solid Films
  • Page Numbers: pp.1-36

Abstract

Multilayer thin coatings (~ 3 µm in thickness) were deposited using reactive radio frequency magnetron sputtering on Ti-6Al-4V substrate for biomaterial applications. Films are a combination of hard zirconium nitride with pure tantalum, used to manage interfacial stress and to avoid crack growth. Alternating hard/ductile material is a biomimetic design inspired by nature (nacre-inspired materials). Tribocorrosion tests were performed in Hank’s solution at 37 °C, under open circuit potential by using a ball-on-disc reciprocating tribometer. A tendency to high resistance against corrosion was found for all the samples. Coatings with a top 100 nm thick ZrN layer showed more noble potential as well as a reduction of both the friction coefficient and the wear rate during the sliding phase. The principal wear mechanism is related to a tribocorrosion layer formation