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Investigation of the structure and physicochemical properties of combined nanocomposite coatings based on Ti-N-Cr/Ni-Cr-B-Si-Fe

Russian Physics Journal, ISSN: 1064-8887, Vol: 52, Issue: 12, Page: 1317-1324
2009
  • 12
    Citations
  • 0
    Usage
  • 12
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    12
    • Citation Indexes
      12
  • Captures
    12

Article Description

Tentative data are presented on a new type of nanocomposite protective coatings produced by a combination of two technologies: plasma-detonation coating deposition with plasma jets and thin coating vacuum-arc deposition. For coatings of thickness 80-90 μm, the structure, physicomechanical properties, and morphology have been investigated and their hardness, elastic Young modulus, and corrosion resistance in various media have been determined. The grain size of a Ti-N-Cr-based nanocomposite coating varied from 2.8 to 4 nm. The following phases and compounds formed as a result of the plasma interaction with the surface of a thick coating have been detected: (Ti,Cr)N (200), (Ti,Cr)N (220), γ-NiFe, hexagonal CrTi, FeNi, (Fe, Ni)N, and Ti-Ni compounds such as TiNi, NiTi, NiTi, etc. It has been found that the nanocomposite coating microhardness increased to (32 ± 1.1) GPa. The elastic modulus estimated from the loading-unloading curves was (320 ± 20) GPa. The protective coatings demonstrated an increased corrosion resistance in acidic and alkaline media in comparison with that of the stainless-steel substrate. © 2009 Springer Science+Business Media, Inc.

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