The adsorption of octadecyl phosphonic acid (ODPA) on oxide‐covered surfaces of ZnMgAl alloy coatings is described as a function of a dielectric barrier discharge (DBD) pretreatment step. The ODPA monolayer formation enables the investigation of the influence of the DBD treatment on the resulting interfacial bond formation and surface coverage. Surface characterisation by means of surface spectroscopy (PM‐IRRAS, XPS) and surface electrochemistry (cyclic voltammetry) showed that the DBD pretreatment with Ar, Ar/O₂ and Ar/H₂O gas mixtures leads to improved barrier properties of the adsorbed ODPA monolayer. Moreover, during ODPA monolayer formation from ethanolic solution, a partial etching of the surface oxide layer occurs.

中文翻译：

---

ZnMgAl合金涂层钢的介电势垒等离子处理对有机膦酸单层吸附的影响

十八烷基膦酸（ODPA）在ZnMgAl合金涂层的氧化物覆盖表面上的吸附被描述为介电势垒放电（DBD）预处理步骤的函数。ODPA单层的形成使得能够研究DBD处理对所得界面键形成和表面覆盖率的影响。通过表面光谱法（PM‐IRRAS，XPS）和表面电化学方法（循环伏安法）进行的表面表征表明，用Ar，Ar / O ₂和Ar / H ₂ O气体混合物对DBD进行预处理可以提高吸附的ODPA的阻隔性能单层。而且，在由乙醇溶液形成ODPA单层的过程中，发生了表面氧化物层的部分蚀刻。