GRAPHENE REINFORCED MAGNESIUM MATRIX COMPOSITES BY HOT PRESSED SINTERING

[摘要] Magnesium matrix compositesreinforced with graphene are fabricated by the combinationof ball milling and hot pressed sintering methods. The effects of the graphene with various wt.% (0-1.25)on the microstructures and mechanical properties such as micro hardness and density of the composites were examined. Microstructure of composites have been investigated by scanning electron microscope and energy dispersive spectroscopy (EDS) for better observation of dispersion of reinforcement.It is indicated that graphene aremainly embedded and dispersed inside the Mg powder, and a small amount of graphene distributed at the grain boundaries. The increase in wt% (up to 1.25 wt.%) of graphene improves the mechanical properties of the composites. The improved mechanicalproperties is ascribed to the effect of uniform distribution of graphene in the grain interiors and at the grain boundaries.

[学科分类] 生物技术

[关键词] Magnesium alloys;Composites;Graphene;S Strengthening