Communications Materials (Aug 2020)

Mechanistic study of superlattice-enabled high toughness and hardness in MoN/TaN coatings

  • Rainer Hahn,
  • Nikola Koutná,
  • Tomasz Wójcik,
  • Anton Davydok,
  • Szilárd Kolozsvári,
  • Christina Krywka,
  • David Holec,
  • Matthias Bartosik,
  • Paul H. Mayrhofer

DOI
https://doi.org/10.1038/s43246-020-00064-4
Journal volume & issue
Vol. 1, no. 1
pp. 1 – 11

Abstract

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Transition metal nitride coatings exhibit high hardness, but typically lack ductility and are therefore prone to failure. Here, the effect of bilayer thickness on the mechanical properties of MoN-TaN superlattices is investigated, leading to coatings with high fracture toughness.