N Palaniappan, Cole Ivan S, Kuznetsov A, Thomas K R Justin, K Balasubramanian, Manickam Sivakumar
School of Chemical Science, Central University of Gujarat India
Advanced Manufacturing and Fabrication Research and Innovation, RMIT University Melbourne Victoria 3100 Australia
RSC Adv. 2021 Jun 22;11(36):22095-22105. doi: 10.1039/d1ra03495b. eCollection 2021 Jun 21.
Magnesium alloys are broadly used worldwide in various applications; however, the serious disadvantage of these alloys are subject to corrosion and in aggressive/corrosive environments. A coating containing gadolinium-based composite materials can increase the alloy protection by strong electron transfer between the host alloy and the lanthanide-containing protective layer. This investigation aims to develop a Gd nanorod functionalised graphene oxide material as a corrosion inhibition barrier on the Mg alloy surface. The obtained functional materials were characterised by various spectroscopy techniques. The corrosion inhibition and composite material stability were studied by the electrochemical methods. The electrochemical stability was shown to increase with the applied current. The hydrogen evolution constantly increased and the corrosion inhibition significantly improved. Also, the computational studies of the material were performed, and their results support the experimental findings. Overall, the resultant composite material's corrosion resistance and cyclic stability are improved, and it could be used as a sodium-ion battery cathode material due to its high reversibility.
镁合金在全球范围内广泛应用于各种领域；然而，这些合金的严重缺点是在侵蚀性/腐蚀性环境中易受腐蚀。含有钆基复合材料的涂层可通过主体合金与含镧系元素的保护层之间的强电子转移来增强合金的防护性能。本研究旨在开发一种钆纳米棒功能化的氧化石墨烯材料，作为镁合金表面的缓蚀屏障。通过各种光谱技术对所得功能材料进行了表征。采用电化学方法研究了缓蚀性能和复合材料的稳定性。结果表明，电化学稳定性随施加电流的增加而提高。析氢量不断增加，缓蚀性能显著改善。此外，还对该材料进行了计算研究，其结果支持了实验结果。总体而言，所得复合材料的耐腐蚀性和循环稳定性得到了提高，由于其高可逆性，可作为钠离子电池的阴极材料。
