Abstract The anti-corrosion behaviour of an inorganic passive film on galvanised steel was improved by modified graphene oxide (mGO). The corrosion current density and corrosion rate were both decreased by two orders of magnitude. Resistances to corrosive ion penetration and charge transfer were increased. Moreover, surface defects were modified, benefiting the decreased electrochemical activity of passive films. In addition, Mott–Schottky analyses showed reduced ionic and electronic conductivities of the passive films. This improved anti-corrosion behaviour was closely related to the effect of mGO on surface morphology modifications and charge-transfer inhibition during corrosion.

中文翻译：

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通过改性氧化石墨烯掺入改善热浸镀锌钢上无机钝化膜的防腐性能

摘要 改性氧化石墨烯（mGO）提高了镀锌钢上无机钝化膜的防腐性能。腐蚀电流密度和腐蚀速率均降低了两个数量级。增加了对腐蚀性离子渗透和电荷转移的抵抗力。此外，表面缺陷得到修饰，有利于钝化膜电化学活性的降低。此外，Mott-Schottky 分析表明钝化膜的离子和电子电导率降低。这种改进的防腐蚀行为与 mGO 对腐蚀过程中表面形貌修饰和电荷转移抑制的影响密切相关。