Journal of Superhard Materials

, Volume 35, Issue 2, pp 105–110 | Cite as

Modification of mechanical properties of TiN/Al2O3 and TiN/Cr/Al2O3 coatings using low-energy high-current electron beams

  • A. D. Pogrebnjak
  • Yu. A. Kravchenko
Production, Structure, Properties

Abstract

The structure, elemental and phase compositions of the TiN/Al2O3 and TiN/Cr/Al2O3 hybrid coatings have been studied. It has been shown that an electron-beam treatment of hybrid coating surface makes it possible to increase the protective layer microhardness from 8.3 to 14.4 GPa. It has been found that the increase of hybrid coating hardness is a result of an increase of the material density and recovery of the α-phase of Al2O3 in the protective layer composition due to the thermal activation of the surface.

Keywords

plasma-detonation protective coatings high-current electron beam electron-beam treatment surface morphology phase structure adhesion nanohardness microhardness 

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Copyright information

© Allerton Press, Inc. 2013

Authors and Affiliations

  • A. D. Pogrebnjak
    • 1
  • Yu. A. Kravchenko
    • 1
  1. 1.Sumy State UniversitySumyUkraine

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