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<p>This study investigates plasma-enhanced high-velocity arc spraying (PE-HAS) for preparing Al-based coatings to protect marine components against corrosion and wear. By adjusting the spray power, we found that the coating prepared under moderate power achieves optimal overall performance, including low porosity (~2.24%), improved microhardness (~36.58 HV<sub>0.1</sub>), and high bond strength (40.6&#xa0;MPa). Its wear rate is reduced by approximately 40% compared to other coatings, and the corrosion current density is lowered to 14.49 μA·cm<sup>−2</sup>. Microstructural analysis indicates that a dense structure and a stable passive film contribute to these enhanced properties. This work provides valuable insights for designing protective coatings for marine applications.</p>

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Investigation on the Microstructure and Wear/Corrosion Resistance of an Al-based Coating Prepared by Plasma-Enhanced High-Velocity Arc Spraying

  • 期刊论文

  • 发表日期：

    2026年4月10日

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  • Tengda Pan,
  • Xiang Xu,
  • Ming Liu,
  • Jie Zhang,
  • Rui Gao,
  • Yujie Zhou,
  • Kaiwen Bai,
  • Guozheng Ma,
  • Haidou Wang

摘要

This study investigates plasma-enhanced high-velocity arc spraying (PE-HAS) for preparing Al-based coatings to protect marine components against corrosion and wear. By adjusting the spray power, we found that the coating prepared under moderate power achieves optimal overall performance, including low porosity (~2.24%), improved microhardness (~36.58 HV0.1), and high bond strength (40.6 MPa). Its wear rate is reduced by approximately 40% compared to other coatings, and the corrosion current density is lowered to 14.49 μA·cm−2. Microstructural analysis indicates that a dense structure and a stable passive film contribute to these enhanced properties. This work provides valuable insights for designing protective coatings for marine applications.