Analysis and Research on characteristics and corrosion resistance of graphene attached to copper surface

Rong-Bu He,M.M.H Mostafa,S Manickam

doi:10.1051/e3sconf/202126102034

Abstract

The adhesion of graphene on copper surface was studied, and its chemical characteristics and corrosion resistance were analyzed. The results of polarization curve analysis show that the corrosion resistance of graphene film is the best when the growth time is 7 min. electrochemical impedance spectroscopy shows that the corrosion resistance of copper substrate is improved by 17 times. The graphite strips prepared at 7 min have the best uniformity and continuity. The graphite residue at 4 min is thin but discontinuous. The graphite strips at 10 min have the thickest thickness but the most grain boundary defects. The optimal process parameters were determined as follows: AR / CH4 / H2 flow rate ratio 600 / 40 / 30 SCCM, temperature 1000 ° C, reaction time 7 min.

Highlights

(a) (b) (c) the process diagram of graphene coated copper In the experimental diagram of the sample at the beginning, middle and end of the polarization curve test, it can be seen that there is almost no change on the surface of the copper sheet, but the color is slightly deepened
The results show that the graphene with 10 min growth time has 3-4 layers, but its structure is disordered, and there are many defects such as grain boundary, which lead to the decline of corrosion resistance; while the graphene with 4 min growth time has about 2-3 layers, the grain structure is the most orderly, but the local discontinuity of graphene film on copper surface leads to the decline of corrosion resistance
The modulus / Z / of copper samples with growth time of 4 min and 10 min is slightly smaller, which indicates that the corrosion resistance of copper samples with growth time of 7 min is the best, and that of copper samples with growth time of 4 min and 10 min is the best The results show that the graphene

Summary

Introduction

(a) (b) (c) the process diagram of graphene coated copper In the experimental diagram of the sample at the beginning, middle and end of the polarization curve test, it can be seen that there is almost no change on the surface of the copper sheet, but the color is slightly deepened.

Objectives

Results

Conclusion