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Corrosion mitigation of carbon steel in acidic and salty solutions using electrophoretically deposited graphene coatings
Journal of Coatings Technology and Research ( IF 2.3 ) Pub Date : 2020-11-18 , DOI: 10.1007/s11998-020-00419-z
Asmaa R. Heiba , Fatma A. Taher , Rabab M. Abou Shahba , Nabil A. Abdel Ghany

In the modern metal finishing industry, corrosion protection plays a critical role, with many coatings created to prevent this phenomenon (corrosion) and protect the metals. Nano-coating has of late been used to develop corrosion-resistant metal composites. Recently, layers of graphene-based materials with extraordinary properties have been successfully manufactured and applied through electrophoretic deposition (EPD). This article summarizes work altering the graphene oxide (GO) content, which was prepared using an adapted Hummers' method and then the simultaneous reduction of the GO suspension by the EPD method into graphene nano-coating on carbon steel. Different parameters were optimized, namely applied voltage, deposition time, and GO concentration. Scanning electron microscopy and X-ray diffraction were used to characterize the coatings. The corrosion resistance of these coatings was measured by electrochemical polarization in aqueous solutions under accelerated corrosion conditions. The results show not only that EPD is a simple technique that allows creating a graphene coat on carbon steel from GO suspension, but also that it forms a graphene nano-coating which provides significant protection against corrosion of steel in acidic and salty solutions.



中文翻译:

使用电泳沉积的石墨烯涂层减轻碳钢在酸性和盐溶液中的腐蚀

在现代金属精加工行业中,腐蚀防护起着至关重要的作用,为了防止这种现象(腐蚀)并保护金属,已创建了许多涂层。纳米涂层最近已用于开发耐腐蚀金属复合材料。近来,具有优异性能的石墨烯基材料层已经成功制造并通过电泳沉积(EPD)进行了应用。本文总结了改变石墨烯氧化物(GO)含量的工作,该工作是使用改良的Hummers方法制备的,然后通过EPD方法将GO悬浮液同时还原为碳钢上的石墨烯纳米涂层。优化了不同的参数,即施加电压,沉积时间和GO浓度。使用扫描电子显微镜和X射线衍射来表征涂层。这些涂层的耐腐蚀性通过在加速腐蚀条件下在水溶液中通过电化学极化来测量。结果表明,EPD不仅是一种简单的技术,可以通过GO悬浮液在碳钢上创建石墨烯涂层,而且还可以形成石墨烯纳米涂层,从而为防止钢在酸性和盐溶液中的腐蚀提供了有效的保护。

更新日期:2020-11-18
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