The effect of GNPs on wear and corrosion behaviors of pure magnesium

This study aims to investigate the role of graphene on wear and corrosion behaviors of pure magnesium. Magnesium/Graphene Nanoparticle (GNP) composites were fabricated via semi powder metallurgy method with a different content of graphene (0.1, 0.25 and 0.5 wt%). The effect of graphene in pure magnesium was examined by hardness, wear and corrosion tests. Microstructural and phase analysis were carried out by Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) analysis. Experimental results revealed that, hardness values increased with the addition of graphene. There was a same trend in wear behaviors with increase of graphene rate. The best wear performance was belonging to the 0.50 wt% graphene/mg composite under load of 10N. So improvement of wear properties was achieved using graphene as reinforcement. According to the microstructural evolution, the uniform distribution was achieved for all samples but partially agglomeration could be seen in Mg-0.50 wt% graphene. Compared to the pure magnesium, corrosion performance was affected negatively in graphene reinforced composites. - Highlights: • Graphene reinforced was used as a reinforcement with different content (0.1,0.25,0.5 wt%) for magnesium matrix composite. • Composites were produced by semi powder metallurgy method that is based on solution. • Mechanical properties of pure magnesium were improved with the addition of graphene. • Wear resistance was enhanced directly with graphene content. • Graphene has negative effect for corrosion performance of magnesium.