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<p>A high-phosphorus Ni–P composite coating co-deposited with tungsten disulfide (WS₂) particles was prepared by electroless plating to improve the wear and corrosion resistance of metal components. The influence of WS₂ concentration (0–4 g/L) on the microstructure, corrosion behavior, and tribological properties was systematically studied. Electrochemical tests showed that the coating with 2 g/L WS₂ exhibited the best corrosion resistance, as evidenced by its noblest corrosion potential (–0.548 V), highest charge transfer resistance in electrochemical impedance spectroscopy, and lower corrosion current density (7.035 × 10⁻⁶ A/cm<sup>2</sup>). The long-term corrosion resistance of this optimal coating was further validated through a 7-day neutral salt spray test. In addition, the composite coating demonstrated excellent wear resistance with an ultra-low average friction coefficient of 0.024 and a wear rate of 2.7 × 10⁻<sup>5</sup> mm<sup>3</sup>·N⁻<sup>1</sup>·m⁻<sup>1</sup>. This study successfully developed a Ni–P-WS₂ composite coating with balanced improvements in both long-term corrosion protection and wear resistance, showing great potential for industrial applications.</p>

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High-phosphorus Ni–P-WS2 composite coatings prepared by electroless plating: corrosion resistance and wear resistance

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月28日

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  • Yongkang Liu,
  • Feifan Chen,
  • Xiang Cheng,
  • Xianwen Zeng,
  • Yuwei Ye,
  • Yong Li,
  • Hao Chen

摘要

A high-phosphorus Ni–P composite coating co-deposited with tungsten disulfide (WS₂) particles was prepared by electroless plating to improve the wear and corrosion resistance of metal components. The influence of WS₂ concentration (0–4 g/L) on the microstructure, corrosion behavior, and tribological properties was systematically studied. Electrochemical tests showed that the coating with 2 g/L WS₂ exhibited the best corrosion resistance, as evidenced by its noblest corrosion potential (–0.548 V), highest charge transfer resistance in electrochemical impedance spectroscopy, and lower corrosion current density (7.035 × 10⁻⁶ A/cm2). The long-term corrosion resistance of this optimal coating was further validated through a 7-day neutral salt spray test. In addition, the composite coating demonstrated excellent wear resistance with an ultra-low average friction coefficient of 0.024 and a wear rate of 2.7 × 10⁻5 mm3·N⁻1·m⁻1. This study successfully developed a Ni–P-WS₂ composite coating with balanced improvements in both long-term corrosion protection and wear resistance, showing great potential for industrial applications.