In this paper, the Plasma electrolytic oxidation (PEO) coatings were formed in K₂ZrF₆-containing electrolyte with the addition of glycerin on aluminum alloy. PEO coating increased the tribological and mechanical properties of the aluminum alloy. The effect of frequency on the properties of PEO coatings was studied. AFM observation showed that the micropores number increased with the increasing frequency. XRD results showed that the content of α-Al₂O₃ ranged with the frequency increase. The coating formed in the electrolyte with the frequency of 800Hz was of the lowest friction coefficient and stablest curve. The glycerin is not only of ability to lower the defect of PEO coatings, but can also increase the wear resistance ability of the coatings.

中文翻译：

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ZL101A铝合金上形成的含ZrO2 PEO涂层的滑动磨损行为

在本文中，等离子电解氧化（PEO）涂层是在含K ₂ ZrF ₆的电解液中形成的，并在铝合金上添加了甘油。PEO涂层提高了铝合金的摩擦学和机械性能。研究了频率对PEO涂层性能的影响。AFM观察表明微孔数量随着频率的增加而增加。XRD 结果表明，α-Al ₂ O ₃随频率的增加而变化。频率为 800 的电解液中形成的涂层Hz 的摩擦系数最低，曲线最稳定。甘油不仅能降低PEO涂层的缺陷，还能提高涂层的耐磨性。