Palaniappan N, Cole I S, Kuznetsov A E, K Balasubramanian, Justin Thomas K R
School of Chemical Sciences, Central University of Gujarat India
Advance Manufacturing and Fabrication Research and Innovation, RMIT University Melbourne Victoria 3100 Australia
RSC Adv. 2019 Oct 11;9(56):32441-32447. doi: 10.1039/c9ra06549k. eCollection 2019 Oct 10.
Magnesium alloys are promising materials for the biomedical and automobile industries. The Mg alloy's light-weight property leads to numerous industrial applications. However, the magnesium alloy oxide layers are not stable in salt environments. Organic inhibitors and epoxy coatings fail as long term barriers in such media. Recently, carbon based functionalized materials, graphene oxides, were shown to be promising materials for improving corrosion resistance in acid and salt environments. Our research considered graphene oxide covalently functionalized with the amino acid leucine to form anticorrosion coating materials. The functionalized materials were characterized by XRD, Raman, FESEM, HRTEM, FTIR, and AFM methods. The corrosion inhibition efficiency was monitored by electrochemical methods. The novelty of the functionalized graphene oxide materials is that they are water impermeable, and thus could enhance the anticorrosion resistance in salt environments.
镁合金是生物医学和汽车工业中很有前景的材料。镁合金的轻质特性使其有众多工业应用。然而，镁合金氧化层在盐环境中不稳定。有机抑制剂和环氧涂层在这种介质中不能长期作为有效的阻隔层。最近，碳基功能化材料氧化石墨烯被证明是在酸和盐环境中提高耐腐蚀性的有前景的材料。我们的研究考虑用氨基酸亮氨酸对氧化石墨烯进行共价功能化，以形成防腐涂层材料。通过X射线衍射（XRD）、拉曼光谱、场发射扫描电子显微镜（FESEM）、高分辨率透射电子显微镜（HRTEM）、傅里叶变换红外光谱（FTIR）和原子力显微镜（AFM）方法对功能化材料进行了表征。通过电化学方法监测缓蚀效率。功能化氧化石墨烯材料的新颖之处在于它们不透水，因此可以增强在盐环境中的抗腐蚀能力。
