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<p>This study aims to fabricate a plasma electrolytic oxidation coating with excellent corrosion resistance and wear resistance on magnesium alloy GW83. PEO coatings were prepared using both conventional frequency (500&#xa0;Hz) and ultra-high frequency (20&#xa0;kHz) in electrolyte solutions with and without ZrO<sub>2</sub> nanoparticles. Results demonstrate that ultra-high frequency effectively promotes the deposition of ZrO<sub>2</sub> nanoparticles. The coating prepared through the synergistic enhancement of ultra-high frequency and ZrO<sub>2</sub> nanoparticles demonstrates a denser surface morphology (99.0%), a higher nanoparticle incorporation (Zr: 46.2&#xa0;wt.%), and an increased coating hardness (11.4 ± 0.7&#xa0;GPa), which imparts excellent corrosion resistance and wear resistance to the coating. Furthermore, the deposition mechanism of ZrO<sub>2</sub> nanoparticles under the action of ultra-high frequency is discussed in detail.</p>

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Corrosion and Wear Resistance of ZrO2 Doped Plasma Electrolytic Oxidation Coating on Mg Alloy GW83 at Ultra-High Frequency Pulse Current

  • 期刊论文

  • 发表日期：

    2025年11月20日

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  • Xiaohe Liu,
  • Shuai Dong,
  • Fulin Wang,
  • Fenghua Wang,
  • Jian Zeng,
  • Li Jin,
  • Xiao-Bo Chen,
  • Jie Dong

摘要

This study aims to fabricate a plasma electrolytic oxidation coating with excellent corrosion resistance and wear resistance on magnesium alloy GW83. PEO coatings were prepared using both conventional frequency (500 Hz) and ultra-high frequency (20 kHz) in electrolyte solutions with and without ZrO2 nanoparticles. Results demonstrate that ultra-high frequency effectively promotes the deposition of ZrO2 nanoparticles. The coating prepared through the synergistic enhancement of ultra-high frequency and ZrO2 nanoparticles demonstrates a denser surface morphology (99.0%), a higher nanoparticle incorporation (Zr: 46.2 wt.%), and an increased coating hardness (11.4 ± 0.7 GPa), which imparts excellent corrosion resistance and wear resistance to the coating. Furthermore, the deposition mechanism of ZrO2 nanoparticles under the action of ultra-high frequency is discussed in detail.