Abstract A hybrid siloxane-based coating was modified with CeO 2 nanoparticles and applied on AZ31. The corrosion protection performance was evaluated via Electrochemical Impedance Spectroscopy (EIS) in 0.05 M NaCl. CeO 2 -modified coating showed improved and more stable protective performance compared to the blank coating. Localized healing of the modified coating was studied via Scanning Vibrating Electrode Technique (SVET), Scanning Ion-Selective Electrode Technique (SIET) and Localized Electrochemical Impedance Spectroscopy (LEIS). Addition of ceria led to lower cathodic activity in 0.05 M NaCl and alkalization was kept localized. The CeO 2 -modified coating provided corrosion protection, including pre-emptive healing of localized corrosion activity, of AZ31.

中文翻译：

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用于AZ31镁合金腐蚀保护的自修复氧化铈改性涂层

摘要 用CeO 2 纳米颗粒对杂化硅氧烷基涂层进行了改性并应用于AZ31。通过电化学阻抗谱 (EIS) 在 0.05 M NaCl 中评估腐蚀保护性能。与空白涂层相比，CeO 2 改性涂层表现出改进和更稳定的保护性能。通过扫描振动电极技术 (SVET)、扫描离子选择性电极技术 (SIET) 和局部电化学阻抗谱 (LEIS) 研究了改性涂层的局部愈合。添加二氧化铈导致在 0.05 M NaCl 中的阴极活性降低，并且碱化保持在局部。CeO 2 改性涂层提供了AZ31的腐蚀保护，包括局部腐蚀活动的预先愈合。