Abstract ZnMo coatings with Mo content from 0.5 to 6 wt.% were electrodeposited on steel from citrate electrolytes. Electrochemical studies of their corrosion behaviour performed in a 5 wt.% NaCl showed that the low Mo content (∼0.5–1.5 wt.%) enhances corrosion protection significantly, whilst higher contents barely improve the corrosion properties in comparison to pure zinc coatings. Microstructural and phase characterisation indicate that the formation of a continuous and compact thin oxide film on the surface of the ZnMo (0.5–1.5 wt.%) coatings is the key factor affecting the high corrosion resistance of such coatings.

中文翻译：

---

Mo添加量对钢电沉积锌镀层腐蚀的影响

摘要 用柠檬酸盐电解液在钢上电沉积钼含量为 0.5 至 6 wt.% 的 ZnMo 涂层。在 5 wt.% NaCl 中对它们的腐蚀行为进行的电化学研究表明，低 Mo 含量（~0.5-1.5 wt.%）显着增强了腐蚀保护，而与纯锌涂层相比，较高的含量几乎没有改善腐蚀性能。微观结构和相表征表明，在 ZnMo (0.5-1.5 wt.%) 涂层表面形成连续致密的薄氧化膜是影响此类涂层高耐腐蚀性的关键因素。