Two kinds of composite coatings, Zn[Formula: see text]Al[Formula: see text]Mg5ZnO[Formula: see text] and Zn[Formula: see text]Al[Formula: see text]Mg5ZnO[Formula: see text], were prepared on steel matrix (Q235) by cold spraying. The Zn, Al, Mg, and ZnO in raw materials were calculated by percentage of mass. The morphology of the original coating was observed by scanning electron microscopy (SEM) and characterized by energy dispersive spectroscopy (EDS). It was found that the microstructures of Zn[Formula: see text]Al[Formula: see text]Mg5ZnO[Formula: see text] and Zn[Formula: see text]Al[Formula: see text]Mg5ZnO[Formula: see text] composite coatings prepared by cold spraying were compact without oxidation products, and the plastic deformation of powder particles was significant. The friction and wear test data of the two coatings showed that the Zn[Formula: see text]Al[Formula: see text]Mg5ZnO[Formula: see text] coating had longer-lasting protective properties and wear resistance under the same conditions. Neutral salt spray test (NSS) and electrochemical accelerated corrosion test were carried out on samples at different time periods. The results of samples’ corrosion microstructure and electrochemical curves showed that Zn[Formula: see text]Al[Formula: see text]Mg5ZnO[Formula: see text] and Zn[Formula: see text]Al[Formula: see text]Mg5ZnO[Formula: see text] have good electrochemical protection performance, and Zn[Formula: see text]Al[Formula: see text]Mg5ZnO[Formula: see text] coating has better protection effect.

中文翻译：

---

冷喷涂Zn-Al-Mg-ZnO复合涂层的防腐性能

两种复合镀层，Zn[分子式：见正文]Al[分子式：见正文]Mg5ZnO[化学式：见正文]和Zn[化学式：见正文]Al[化学式：见正文]Mg5ZnO[公式：见正文]，通过冷喷涂在钢基体（Q235）上制备。原料中的Zn、Al、Mg、ZnO按质量百分比计算。通过扫描电子显微镜（SEM）观察原始涂层的形态，并通过能量色散光谱（EDS）进行表征。发现Zn[公式：见正文]Al[公式：见正文]Mg的显微组织5ZnO[化学式：见正文]和Zn[化学式：见正文]Al[化学式：见正文]Mg5冷喷涂制备的ZnO[分子式：见正文]复合涂层致密，无氧化产物，粉末颗粒塑性变形明显。两种涂层的摩擦磨损试验数据表明，Zn[分子式：见正文]Al[分子式：见正文]Mg5ZnO[分子式：见正文]涂层在相同条件下具有更持久的保护性能和耐磨性。对不同时间段的样品进行中性盐雾试验（NSS）和电化学加速腐蚀试验。试样腐蚀显微组织和电化学曲线结果表明，Zn[式：见正文]Al[式：见正文]Mg5ZnO[化学式：见正文]和Zn[化学式：见正文]Al[化学式：见正文]Mg5ZnO[分子式：见文]具有良好的电化学保护性能，而Zn[分子式：见文]Al[分子式：见文]Mg5ZnO[分子式：见正文]涂层具有较好的防护效果。