Superhard metallic coatings

Jindřich Musil, Martin Jaroš, Šimon Kos

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The letter reports on the surface hardening of bulk soft metal materials by protective coatings made of the same metal as bulk but with up to 6 times higher hardness than that of the bulk material. This surface hardening is demonstrated by covering of the Ti substrate with a low hardness H bulk ≈ 5 GPa by a 1200 nm thick Ti coating with a high hardness H coating ≈ 30 GPa. The protective hard Ti coatings were sputtered by a new sputtering technology based on extremely high pressures (≥1000 GPa), high temperatures exceeding the melting temperature T m of the coating material and extremely high cooling rate of the created coating (≥10 10 K/s). The principle of this technology realized at an atomic level is described in detail.

Original languageEnglish
Pages (from-to)32-35
Number of pages4
JournalMaterials Letters
Volume247
DOIs
Publication statusPublished - 15 Jul 2019

Keywords

  • Dual magnetron
  • Grain size
  • Hard Ti coating
  • Hardness
  • Sputtering
  • Structure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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