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<p>Gibbs energies of the reactions between titanium nitrides and the components of the electrolyte plasma during the synthesis of oxide-ceramic coatings on nitrided titanium were calculated. Atomic and molecular oxygen interact with titanium nitride, forming titanium oxide and nitrogen. An increase in temperature and the size of discharge channels leads to a&#xa0;slowdown in the growth rate of oxide-ceramic coatings caused by the decrease in the oxidizer content in plasma discharges. X‑ray diffraction analysis and scanning electron microscopy were employed to investigate the structure and phase composition of oxide-ceramic coatings derived from nitrided VT1‑0 and VT6&#xa0;alloys. Limiting the coating synthesis time on nitrided VT1‑0 and VT6&#xa0;titanium alloys to 20–30 min was proposed to obtain oxide-ceramic coatings with low porosity and increased microhardness.</p>

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The influence of titanium pre-nitriding on the synthesis of oxide-ceramic coatings

  • 期刊论文

  • 发表日期：

    2025年11月10日

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  • V. M. Posuvailo,
  • I. V. Kovalchuk,
  • T. M. Kravchyshyn

摘要

Gibbs energies of the reactions between titanium nitrides and the components of the electrolyte plasma during the synthesis of oxide-ceramic coatings on nitrided titanium were calculated. Atomic and molecular oxygen interact with titanium nitride, forming titanium oxide and nitrogen. An increase in temperature and the size of discharge channels leads to a slowdown in the growth rate of oxide-ceramic coatings caused by the decrease in the oxidizer content in plasma discharges. X‑ray diffraction analysis and scanning electron microscopy were employed to investigate the structure and phase composition of oxide-ceramic coatings derived from nitrided VT1‑0 and VT6 alloys. Limiting the coating synthesis time on nitrided VT1‑0 and VT6 titanium alloys to 20–30 min was proposed to obtain oxide-ceramic coatings with low porosity and increased microhardness.