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<p>In this study, TiAlN films were applied on&#xa0;420-stainless&#xa0;steel using the cathodic arc evaporation method. The effect of the duty cycle of bias voltage was investigated on the&#xa0;film microstructure,&#xa0;mechanical properties, and electrochemical behavior of TiAlN coating. The phases characterization,&#xa0;microstructure, surface morphologies and surface roughness of the TiAlN films were investigated by XRD method, FESEM and profilometer method, respectively. Mechanical properties&#xa0;and corrosion resistance of TiAlN films were studied by nano-indentation and electrochemical methods. The maximum deposition rate was 1.64&#xa0;µm/h for the duty cycle of 20%, and the microstructural investigation verified the formation of cohesive and dense nanostructure TiAlN films. The coating grain size decreases with an increase in the duty cycle, leading to an improvement in mechanical properties. With an increase in the duty cycle, the number and size distribution of macro-particles decreased. The best corrosion resistance was obtained for the coatings deposited at a 40% duty cycle.</p>

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The Effect of Substrate Duty Cycle on the Mechanical and Electrochemical Properties of TiAlN Coatings Deposited by Cathodic Arc Evaporation

  • 期刊论文

  • 发表日期：

    2025年3月21日

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  • Majid Mohammadi,
  • Mina Toloueipour,
  • Arash Yazdani

摘要

In this study, TiAlN films were applied on 420-stainless steel using the cathodic arc evaporation method. The effect of the duty cycle of bias voltage was investigated on the film microstructure, mechanical properties, and electrochemical behavior of TiAlN coating. The phases characterization, microstructure, surface morphologies and surface roughness of the TiAlN films were investigated by XRD method, FESEM and profilometer method, respectively. Mechanical properties and corrosion resistance of TiAlN films were studied by nano-indentation and electrochemical methods. The maximum deposition rate was 1.64 µm/h for the duty cycle of 20%, and the microstructural investigation verified the formation of cohesive and dense nanostructure TiAlN films. The coating grain size decreases with an increase in the duty cycle, leading to an improvement in mechanical properties. With an increase in the duty cycle, the number and size distribution of macro-particles decreased. The best corrosion resistance was obtained for the coatings deposited at a 40% duty cycle.