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<p>Carbon steel offers advantages such as high strength and excellent machinability, but its further industrial application is constrained by wear and corrosion issues. This study successfully deposited a Ni-ZrB<sub>2</sub> composite coating on L360N carbon steel using pulse electrodeposition technology. Additionally, the mechanical properties and corrosion resistance of pure Ni-based coatings and composite coatings with varying ZrB<sub>2</sub> additions were compared. Results indicate that incorporating ZrB<sub>2</sub> nanomaterials effectively refines the microcrystalline size of the composite coating, resulting in a denser structure. Optimal performance is achieved when ZrB<sub>2</sub> is added at 0.5&#xa0;g/L in the plating solution. The hardness of the Ni-ZrB<sub>2</sub>-0.5 composite coating is approximately 1.3 times that of the pure alloy coating. Simultaneously, compared to the pure alloy coating, the average coefficient of friction (COF) decreased by about 42.1%, and the impedance in a 3.5 wt% NaCl solution increased to nearly 5.5 times that of the pure Ni coating. This performance enhancement is primarily attributed to the grain refinement effect and dispersion strengthening of ZrB<sub>2</sub>. Furthermore, the Ni-ZrB<sub>2</sub>-0.5 coating exhibits the highest <i>R</i><sub>ct</sub> value (13,450 Ω·cm<sup>2</sup>) in a 3.5 wt% NaCl solution saturated with CO<sub>2</sub>. The presence of a “labyrinth effect” within the coating also contributes to its enhanced corrosion resistance.</p>

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Preparation of Ni-ZrB2 composite coatings and investigation of corrosion resistance and wear resistance properties

  • 期刊论文

  • 发表日期：

    2026年1月29日

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  • Yujie Guo,
  • Haitao Liu,
  • Haijiao Sun,
  • Hao Chen,
  • Shijun Xu,
  • Han Liu,
  • Yi He

摘要

Carbon steel offers advantages such as high strength and excellent machinability, but its further industrial application is constrained by wear and corrosion issues. This study successfully deposited a Ni-ZrB2 composite coating on L360N carbon steel using pulse electrodeposition technology. Additionally, the mechanical properties and corrosion resistance of pure Ni-based coatings and composite coatings with varying ZrB2 additions were compared. Results indicate that incorporating ZrB2 nanomaterials effectively refines the microcrystalline size of the composite coating, resulting in a denser structure. Optimal performance is achieved when ZrB2 is added at 0.5 g/L in the plating solution. The hardness of the Ni-ZrB2-0.5 composite coating is approximately 1.3 times that of the pure alloy coating. Simultaneously, compared to the pure alloy coating, the average coefficient of friction (COF) decreased by about 42.1%, and the impedance in a 3.5 wt% NaCl solution increased to nearly 5.5 times that of the pure Ni coating. This performance enhancement is primarily attributed to the grain refinement effect and dispersion strengthening of ZrB2. Furthermore, the Ni-ZrB2-0.5 coating exhibits the highest Rct value (13,450 Ω·cm2) in a 3.5 wt% NaCl solution saturated with CO2. The presence of a “labyrinth effect” within the coating also contributes to its enhanced corrosion resistance.