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<p>Corrosion of steel has several catastrophic consequences in various sectors. The inorganic nanoparticle-based anticorrosive coating on steel drew important attention to its large surface-to-volume ratio. The primary aim of this study is to synthesize and characterize t-ZrO<sub>2</sub> nanoparticles at an optimized annealing temperature and evaluate their structural, morphological, and optical properties. Additionally, the study investigates their effectiveness as a corrosion inhibitor for carbon steel in 1&#xa0;M H<sub>2</sub>SO<sub>4</sub>. The study explores the cheap, facile, green synthesis of t-ZrO<sub>2</sub> nanoparticles (NPs) through bark extract from the gum arabic plant (<i>Acacia nilotica</i>) for anticorrosive coatings on carbon steel. X-ray diffraction (XRD) analysis confirms the tetragonal phase structure and the crystallite size, calculated using Scherrer’s formula, is found to be 8.1&#xa0;nm. Fourier-transform infrared (FT-IR) spectroscopy reveals the presence of Zr-O bonding along with organic residues from plant extracts, confirming the formation of t-ZrO<sub>2</sub> NPs. Field emission scanning electron microscopy (FESEM) images confirm a rock stone-like structure, while energy dispersive X-ray (EDX) spectroscopy verifies the presence of Zr and O elements. The study further investigates the corrosion inhibition efficiency of t-ZrO<sub>2</sub> NPs on carbon steel in 1&#xa0;M H<sub>2</sub>SO<sub>4</sub>. The atomic force microscopy (AFM) analyses reveal a smoother surface with reduced roughness in the presence of the inhibitor. Electrochemical measurements, including weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS), confirm a significant reduction in corrosion rate. The inhibition efficiency reaches 95.2% at 200&#xa0;ppm of 0.2&#xa0;M t-ZrO<sub>2</sub> NPs, with an increased charge transfer resistance (R<sub>ct</sub>) of 14,715&#xa0;Ω&#xa0;cm<sup>2</sup> and a reduced double-layer capacitance (C<sub>dl</sub>) of 0.631 × 10⁸&#xa0;F/cm<sup>2</sup>. These findings demonstrate that t-ZrO<sub>2</sub> NPs act as an effective corrosion inhibitor for carbon steel in acidic environments.</p>

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Nanoengineered t-ZrO2 coatings for superior corrosion resistance on steel surfaces

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月1日

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  • H. Mohamed Kasim Sheit,
  • K. S. Mohan,
  • N. Geetha,
  • R. Lavanya,
  • Karthik Kannan,
  • S. Esakki Muthu,
  • Manikandan Ayyar,
  • Prabhu Paramasivam,
  • Saravanan Rajendran,
  • M. Santhamoorthy,
  • S. Santhoshkumar,
  • Ankush Mehta

摘要

Corrosion of steel has several catastrophic consequences in various sectors. The inorganic nanoparticle-based anticorrosive coating on steel drew important attention to its large surface-to-volume ratio. The primary aim of this study is to synthesize and characterize t-ZrO2 nanoparticles at an optimized annealing temperature and evaluate their structural, morphological, and optical properties. Additionally, the study investigates their effectiveness as a corrosion inhibitor for carbon steel in 1 M H2SO4. The study explores the cheap, facile, green synthesis of t-ZrO2 nanoparticles (NPs) through bark extract from the gum arabic plant (Acacia nilotica) for anticorrosive coatings on carbon steel. X-ray diffraction (XRD) analysis confirms the tetragonal phase structure and the crystallite size, calculated using Scherrer’s formula, is found to be 8.1 nm. Fourier-transform infrared (FT-IR) spectroscopy reveals the presence of Zr-O bonding along with organic residues from plant extracts, confirming the formation of t-ZrO2 NPs. Field emission scanning electron microscopy (FESEM) images confirm a rock stone-like structure, while energy dispersive X-ray (EDX) spectroscopy verifies the presence of Zr and O elements. The study further investigates the corrosion inhibition efficiency of t-ZrO2 NPs on carbon steel in 1 M H2SO4. The atomic force microscopy (AFM) analyses reveal a smoother surface with reduced roughness in the presence of the inhibitor. Electrochemical measurements, including weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS), confirm a significant reduction in corrosion rate. The inhibition efficiency reaches 95.2% at 200 ppm of 0.2 M t-ZrO2 NPs, with an increased charge transfer resistance (Rct) of 14,715 Ω cm2 and a reduced double-layer capacitance (Cdl) of 0.631 × 10⁸ F/cm2. These findings demonstrate that t-ZrO2 NPs act as an effective corrosion inhibitor for carbon steel in acidic environments.