Abstract The interactions between oxalic acid and zinc substrates have been studied through the deposition of zinc oxalate coating by immersion. The corrosion behaviour of zinc was investigated by surface observation and electrochemical impedance spectroscopy (EIS). Better protective properties were observed for samples treated with 10 −1 M oxalic acid compared to other concentrations and the enrichment of corrosion product by Na was observed. The electrochemical results reveal that the oxalate coating increases corrosion protection in corrosive medium. It is proposed that the zinc oxalate coating formed act as a basis for anchoring zinc corrosion products forming simonkolleite improving corrosion resistance.

中文翻译：

---

锌草酸锌转化涂层的开发与表征

摘要 通过浸渍法沉积草酸锌涂层，研究了草酸和锌基体之间的相互作用。通过表面观察和电化学阻抗谱（EIS）研究了锌的腐蚀行为。与其他浓度相比，用 10 -1 M 草酸处理的样品观察到更好的保护性能，并且观察到 Na 对腐蚀产物的富集。电化学结果表明草酸盐涂层增加了在腐蚀性介质中的腐蚀保护。建议形成的草酸锌涂层作为锚定锌腐蚀产物的基础，形成菱镁矿以提高耐腐蚀性。