Investigation of interaction between graphene and steel using raman spectroscopy
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Authors: Fushiwaki, Y., Abdelkader, A.M. and Young, R.J.
Journal: NSTI: Advanced Materials - TechConnect Briefs 2015
The purpose of this study is to understand the interaction between graphene and steel using Raman spectroscopy. Graphene was firstly coated on polished steel, and then, the interaction between the graphene and the steel was investigated by obtaining Raman band shifts in a four-point bending test. It has been found that there is a shift of the 2D band to lower wavenumber. These results might enable us to know the interfacial shear strength between the graphene and the steel. The results obtained showed that it is possible to determine the influence of the unit strain on the 2D band shift for the graphene coated on the steel. In the case of large graphene flake with a diameter of around 15 μm, more than-20 cm -1 band shift per 1% strain was detected. However, only-1 to 0 cm -1 was found on a small graphene flake with a diameter of ∼5 μm.