Study on metal corrosion protection mechanism of graphene nano coating

Xuelian Bai,Feng Zhang,Bin Wu,Meijing Cai,Chengjun Liu,Hua Zhang,Kun Jiang,X Wei

doi:10.1051/e3sconf/202021302018

Abstract

Organic coating is considered to be one of the most effective methods to prevent metal corrosion. The corrosion resistance of the coating was tested by the improved copper accelerated acetic acid immersion test, and the quality change of the coating sample before and after immersion was tested. The appearance change of graphene was observed by SEM, and the anticorrosion mechanism of graphene was studied. The results showed that the copper salt accelerated acetic acid salt immersion test accelerated the corrosion process and shortened the determination time. There was no obvious change in the test sample after soaking for 400h. The main anticorrosion mechanism is that the conductive graphene in graphene nano anticorrosive coating can effectively protect the metal substrate by “conductive bridging”.

Highlights

Corrosion costs are increasing, and preventive strategies have become an important industrial demand
Anticorrosive coatings on metal surface can play the role of shielding, passivation and electrochemical protection, which is of great significance to the research of metal corrosion and protection
It is found that graphene has many advantages in mechanics, electricity, heat and magnetism Their unique nanostructures make them expected to be widely used in high-performance electronic devices, composites, biomaterials and gas sensors[1,2]. It has become a new favorite in the field of metal corrosion protection because of its good conductivity and physical barrier effect determined by sp2 hybrid structure

Summary

Introduction

Corrosion costs are increasing, and preventive strategies have become an important industrial demand. Materials Graphene, E-12 epoxy resin, silane coupling agent KH550, 1000 mesh zinc powder, calcium carbonate, mica powder, n-butanol, xylene, propylene glycol methyl ether acetate, isophorone, cyclohexanone, Nmethylpyrrolidone, are all chemically pure.

Results

Conclusion