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<p>This paper presents a systematic investigation into the corrosion behavior of electroplated chromium coatings on TC6 titanium alloy in a simulated marine environment and its effect on the sliding wear properties of the coatings. The results indicate that long-term corrosion leads to progressive degradation of the passive layer, propagation of microcracks, and eventual spallation of the coatings. Sliding wear tests demonstrated a shift in the wear mechanism from abrasive and delamination wear under gross slip conditions at 30 and 60&#xa0;days to dominant adhesive wear with partial slip after 90&#xa0;days of corrosion. The wear rate increased markedly with exposure time, reaching approximately 18 times that of the uncorroded specimen after 90&#xa0;days. These findings reveal the critical impact of chloride-induced corrosion on the failure of chromium coatings and provide valuable guidance for the design of wear- and corrosion-resistant surfaces in marine applications.</p>

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Effects of Corrosion Time on the Sliding Wear Performance of Electroplated Chromium Coatings on TC6 Alloy in Simulated Marine Conditions

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • Chaorun Si,
  • Zeyuan Zhao,
  • Haodong Sun

摘要

This paper presents a systematic investigation into the corrosion behavior of electroplated chromium coatings on TC6 titanium alloy in a simulated marine environment and its effect on the sliding wear properties of the coatings. The results indicate that long-term corrosion leads to progressive degradation of the passive layer, propagation of microcracks, and eventual spallation of the coatings. Sliding wear tests demonstrated a shift in the wear mechanism from abrasive and delamination wear under gross slip conditions at 30 and 60 days to dominant adhesive wear with partial slip after 90 days of corrosion. The wear rate increased markedly with exposure time, reaching approximately 18 times that of the uncorroded specimen after 90 days. These findings reveal the critical impact of chloride-induced corrosion on the failure of chromium coatings and provide valuable guidance for the design of wear- and corrosion-resistant surfaces in marine applications.