Enhancing corrosion resistance by Shear-Rolling Process-Induced less defective graphene

IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL
Longyi Fan , Jie Yan , Zhou Yang , Jin Zhang , Xiaolin Chen , Renguo Guan
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Abstract

The study investigates the effects of shear-rolling on the structural evolution and corrosion resistance properties of oxygen plasma treated-reduced graphene oxide (P-rGO) coated aluminum (Al). The abundant surface oxygen-containing groups induced by plasma treatment enhance the interfacial bonding between P-rGO and Al. The phenomenon of self-healing is observed in P-rGO upon the application of shear-rolling. Comprehensive analyses, including Raman, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), Laser scanning confocal microscopy (LSCM), X-ray diffraction (XRD) analyses, collectively reveal that P-rGO forms a robust bind with Al, serving as an effective corrosion barrier. The enhanced protective performance of P-rGO is largely attributed to the less-defective graphene layer and strong adhesion to Al, which limits electrolyte penetration and reduces corrosion susceptibility. Subsequent scanning electron microscopy (SEM) images post-corrosion testing confirm that P-rGO maintains a smooth surface in contrast to bare Al and rGO coated Al, which exhibit more substantial surface deterioration. The results highlight the potential of shear-rolling as an effective method for enhancing the performance of graphene-based coatings in protective applications.

Abstract Image

Abstract Image

利用剪切轧制工艺提高石墨烯的耐腐蚀性能
研究了剪切轧制对氧等离子体处理还原氧化石墨烯(P-rGO)涂层铝(Al)结构演变和耐腐蚀性能的影响。等离子体处理诱导的丰富的表面含氧基团增强了P-rGO与Al之间的界面键合。剪切轧制后,P-rGO出现了自愈现象。综合分析,包括拉曼、x射线光电子能谱(XPS)、透射电子显微镜(TEM)、激光扫描共聚焦显微镜(LSCM)、x射线衍射(XRD)分析,共同揭示了P-rGO与Al形成了牢固的结合,作为有效的腐蚀屏障。P-rGO的保护性能增强很大程度上归功于其缺陷较少的石墨烯层和与Al的强附着力,从而限制了电解质的渗透,降低了腐蚀敏感性。腐蚀测试后的扫描电镜(SEM)图像证实,与裸露的Al和rGO涂层的Al相比,P-rGO保持了光滑的表面,后者表现出更明显的表面劣化。研究结果强调了剪切轧制作为提高石墨烯基涂层防护性能的有效方法的潜力。
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来源期刊
Applied Surface Science
Applied Surface Science 工程技术-材料科学:膜
CiteScore
12.50
自引率
7.50%
发文量
3393
审稿时长
67 days
期刊介绍: Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.
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