Evaluation the Effect of Graphene Oxide as Nanofiller on Corrosion Protection Properties of Epoxy Coatings

Publish Year: 1395
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

IMES10_015

تاریخ نمایه سازی: 6 اردیبهشت 1396

Abstract:

In this research, graphene oxide (GO) nanosheets synthesized via modified Hummers method are used as nanofiller in epoxy coatings and the effect of GO weight percent (wt. %) on the corrosionprotection behavior of epoxy coatings on mild steel substrates is investigated. The dispersion ofGO in epoxy coating is considered by field emission- scanning electron microscopy (FE-SEM) and the corrosion protection performance of nanocomposite coatings is evaluated throughelectrochemical impedance spectroscopy (EIS). The results show that GO wt. % (0.1, 0.3, 0.5 wt.%) is an important parameter in order to achieve a nanocomposite coating with maximum corrosion protection and improved GO dispersion in polymer coating. Although allnanocomposite coatings have significantly higher corrosion resistance than neat epoxy coating, epoxy coatings containing 0.1 wt. % GO show maximum corrosion protection. By increasing GOloading (0.3 and 0.5 wt. % GO) in epoxy coating, agglomeration of GO nanosheets and decreaseof corrosion protection is resulted, compared to nanocomposite coatings containing 0.1 wt. % GO. The improved corrosion resistance of nanocomposite coatings is assigned to barrier properties of GO nanosheets

Authors

Sepideh Pourhashem

Division of Nanotechnology and Advanced Materials, Materials and Energy Research center, Karaj, Iran

Mohammad Reza Vaezi

Division of Nanotechnology and Advanced Materials, Materials and Energy Research center, Karaj, Iran

Alimorad Rashidi

Nanotechnology Research center, Research Institute of Petroleum Industry, Tehran, Iran;

Mohammad Reza Bagherzadeh

Nanotechnology Research center, Research Institute of Petroleum Industry, Tehran, Iran;

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