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Physics of the Solid State

, Volume 60, Issue 10, pp 2030–2033 | Cite as

Microstructure and Mechanical Properties of Multilayer α-AlN/α-BCN Coating as Functions of the Current Density during Sputtering of a B4C Target

  • A. D. Pogrebnyak
  • V. I. Ivashchenko
  • N. K. Erdybaeva
  • A. I. Kupchishin
  • M. A. Lisovenko
Mechanical Properties, Physics of Strength, and Plasticity

Abstract

Multilayer AlN/BCN coating of nanometer scale have been prepared by magnetron sputtering of Al and B4C targets in an argon–nitrogen atmosphere during deposition on a Si substrate. These coating have an X-ray amorphous structure and the maximum Knoop hardness of 27 GPa (at the current density 100 mA). The first-principle molecular dynamics calculations show that the B4–BN layer is dynamically unstable; thus, it will not be epitaxial and will be amorphous or have a structure different from the B4–BN structure. The thermal vacuum annealing from 600 to 800°C of samples with multilayer nanosized coating leads to the decrease in the Knoop hardness to 18 GPa; however, the coating structure is retained X-ray amorphous.

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • A. D. Pogrebnyak
    • 1
  • V. I. Ivashchenko
    • 2
  • N. K. Erdybaeva
    • 3
  • A. I. Kupchishin
    • 4
  • M. A. Lisovenko
    • 1
  1. 1.Sumy State UniversitySumyUkraine
  2. 2.Frantsevich Institute of Problems of Material Sciencesthe National Academy of Sciences of UkraineKyivUkraine
  3. 3.Serikbaev East Kazakhstan State Technical UniversityUst-KamenogorskKazakhstan
  4. 4.Abai Kazakh National Pedagogical UniversityAlmatyKazakhstan

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