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<p>In the present work, DLC coatings, well known for their antiwear properties, were modified by introducing to the structure an additive metal with antibacterial properties—silver. Diamond-like coatings doped with silver were deposited on Cr–CrN layers created on steel 316L. To create the coatings, high-power impulse magnetron sputtering (HiPIMS) was used. The work carried out was divided into doping of DLC layers with silver and obtaining coatings with different contents of this metal by modifying the frequency of the voltage pulses applied to the silver target magnetron and investigating of the surface morphology, chemical and phase composition, mechanical properties and antibacterial activity. Light microscopy was used to analyse the surface morphology. The mechanical properties of the coatings were investigated using nanoindentation and the scratch method. Analysis of the antibacterial properties was carried out using two bacterial strains: <i>Escherichia coli</i> (Gram-negative) and <i>Staphylococcus aureus</i> (Gram-positive). The results showed that silver-doped DLC at a magnetron pulse frequency of 200&#xa0;Hz had the best mechanical properties compared to other silver-doped coatings and possessed bactericidal activity. </p>

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Influence of parameters in the magnetron sputtering process (HiPIMS) on the mechanical and antibacterial properties of silver-doped DLC coatings

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月20日

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  • Artur Albert Kozera,
  • Zbigniew Słomka,
  • Joanna Kacprzyńska-Gołacka,
  • Rafał Chodun,
  • Daniel Paćko,
  • Wioletta Barszcz,
  • Halina Garbacz,
  • Jerzy Robert Sobiecki,
  • Jerzy Smolik

摘要

In the present work, DLC coatings, well known for their antiwear properties, were modified by introducing to the structure an additive metal with antibacterial properties—silver. Diamond-like coatings doped with silver were deposited on Cr–CrN layers created on steel 316L. To create the coatings, high-power impulse magnetron sputtering (HiPIMS) was used. The work carried out was divided into doping of DLC layers with silver and obtaining coatings with different contents of this metal by modifying the frequency of the voltage pulses applied to the silver target magnetron and investigating of the surface morphology, chemical and phase composition, mechanical properties and antibacterial activity. Light microscopy was used to analyse the surface morphology. The mechanical properties of the coatings were investigated using nanoindentation and the scratch method. Analysis of the antibacterial properties was carried out using two bacterial strains: Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive). The results showed that silver-doped DLC at a magnetron pulse frequency of 200 Hz had the best mechanical properties compared to other silver-doped coatings and possessed bactericidal activity.