Abstract Self-assembled (SA) layers of phosphates/silanes/thiols were applied as temporary protective films on Mg-AZ31. Retention of phosphoryl oxygen (P O) on magnesium (Mg), demonstrates dominant bidentate bonding. Distribution of the phosphate nodules are homogeneous, while silanes form island/cluster depositions, apparently sealing the pores and stabilizing the oxide of Mg. Cathodic prepolarization testifies that alkalinization can cause an additional conversion of the SA layers, increasing its protective properties. Although phosphates are with low corrosion rates, hexadecyltrimethoxysilane exhibits high corrosion impedance due to multilayer distribution. The barrier properties are better concluded by considering the resistance (Rct and R(oxi + SA)) values of impedance measurements.

中文翻译：

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用于镁-AZ31 合金临时腐蚀保护的自组装层

摘要 磷酸盐/硅烷/硫醇的自组装 (SA) 层被用作 Mg-AZ31 上的临时保护膜。磷酰氧 (PO) 保留在镁 (Mg) 上，显示出占优势的双齿键合。磷酸盐结核的分布是均匀的，而硅烷形成岛/簇沉积，显然密封了孔隙并稳定了镁的氧化物。阴极预极化证明碱化可以引起 SA 层的额外转化，从而增加其保护性能。尽管磷酸盐的腐蚀速率低，但十六烷基三甲氧基硅烷由于多层分布而表现出高腐蚀阻抗。通过考虑阻抗测量的电阻 (Rct 和 R(oxi + SA)) 值，可以更好地总结阻隔特性。