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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >A mechanistic study of the enhanced cathodic protection performance of graphene-reinforced zinc rich nanocomposite coating for corrosion protection of carbon steel substrate
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A mechanistic study of the enhanced cathodic protection performance of graphene-reinforced zinc rich nanocomposite coating for corrosion protection of carbon steel substrate

机译：石墨烯增强型纳米复合涂层的增强阴极保护性能的机制研究，用于碳钢基材腐蚀保护

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AbstractThe impact mechanism of graphene nanosheets on the corrosion resistance and protection performance of zinc rich epoxy coatings was investigated. The potential-time measurement, electrochemical impedance spectroscopy (EIS), salt spray fog testing and scanning electron microscopy were used to characterize the protection performance of coatings. A relatively simple EIS model was used to characterize the effect of graphene nanosheets in terms of percolating structure of the zinc rich epoxy coating. The results of corrosion studies revealed that while addition of 0.4?wt% of graphene nanosheets resulted in potent protection performance of zinc rich coating, a low amount of graphene content exhibited a reverse effect. It was concluded that the enhancement of the corrosion protection performance of the ZRE coating in presence of a satisfactory loading of graphene particles could be attributed to the more uniform activation of zinc particles and also the superior percolation action of graphene nanosheets. Moreover, the addition of a proper amount of graphene nanosheets in ZRE coating can provide an enhanced barrier effect against aggressive species and thereby provides a less aggressive environment for corrosion of zinc particles.Highlights?Addition of 0.4% graphene to coating resulted in a potent protection performance.?Addition of graphene particles enhanced the percolation structure of coating.?Graphene nanosheets provided more uniform activation of sacrificial zinc particles.?Addition of insufficient amount of graphene particles resulted in a reverse effect.]]>
机译：<！[CDATA [ 抽象 石墨烯纳米片对富含锌环氧涂层耐腐蚀性和保护性能的影响机制。潜在的时间测量，电化学阻抗谱（EIS），盐喷雾雾试验和扫描电子显微镜用于表征涂层的保护性能。相对简单的EIS模型用于表征石墨烯纳米片中石墨烯纳米型在富锌的环氧涂层的渗透结构方面的作用。腐蚀研究结果表明，虽然加入0.4〜wt％的石墨烯纳米片导致锌掺杂的有效的保护性能，但少量的石墨烯含量表现出逆向效果。结论是，在满足石墨烯颗粒的情况下，增强ZRE涂层的腐蚀性能可能归因于锌颗粒的激活更均匀，也是石墨烯纳米液的优异渗透作用。此外，在ZRE涂层中添加适量的石墨烯纳米片可以为侵蚀性物种提供增强的阻挡效应，从而为锌颗粒的腐蚀提供了更少的侵蚀环境。 亮点 ？ 添加0.4％石墨烯到涂层导致有效的保护性能。 ？ 添加石墨烯颗粒增强了涂层的渗滤结构。 ？ Graphene NanosheS提供更均匀的牺牲锌颗粒的激活。 ？ 添加石墨烯颗粒量不足导致反向效果。 ]]>

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