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<p>This study explores the development of novel polymer composite coatings incorporating glass fillers to enhance corrosion protection of 3D-printed 316 L stainless steel in acidic environment. The formulated coatings, GIP/MDA, GIP/MDA/0.04, and GIP/MDA/0.08, were characterized using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), electrochemical techniques (potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), and electrochemical frequency modulation (EFM)), and contact angle measurements. Results showed that increasing the glass oxide content improved corrosion protection efficiency, with GIP/MDA/0.08 exhibiting the highest efficiency, achieving 98.1%, 98.0%, and 96.17% in PDP, EIS, and EFM tests, respectively. Computational methods, including density functional theory (DFT) and molecular dynamics (MD) simulations, corroborated the superior performance of GIP/MDA/0.08, revealing insights into its adsorption behavior and structural properties. These findings suggest that the glass-reinforced epoxy composites offer significant potential for protecting stainless steel components manufactured via additive processes in harsh environments.</p>

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Exploring new formulated polymer composite coatings by glass for corrosion protection of additively manufactured 316 L stainless steel alloy in acidic environment: electrochemical measurements characterization and computational approaches

  • 期刊论文

  • 发表日期：

    2025年2月27日

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  • Anouar El Magri,
  • Rachid Hsissou,
  • Elhachmia Ech-chihbi,
  • Rajae Salim,
  • Khaled Fouad Khaled,
  • Belkheir Hammouti

摘要

This study explores the development of novel polymer composite coatings incorporating glass fillers to enhance corrosion protection of 3D-printed 316 L stainless steel in acidic environment. The formulated coatings, GIP/MDA, GIP/MDA/0.04, and GIP/MDA/0.08, were characterized using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), electrochemical techniques (potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), and electrochemical frequency modulation (EFM)), and contact angle measurements. Results showed that increasing the glass oxide content improved corrosion protection efficiency, with GIP/MDA/0.08 exhibiting the highest efficiency, achieving 98.1%, 98.0%, and 96.17% in PDP, EIS, and EFM tests, respectively. Computational methods, including density functional theory (DFT) and molecular dynamics (MD) simulations, corroborated the superior performance of GIP/MDA/0.08, revealing insights into its adsorption behavior and structural properties. These findings suggest that the glass-reinforced epoxy composites offer significant potential for protecting stainless steel components manufactured via additive processes in harsh environments.