Study of Si3N4 reinforcement on the morphological and tribo-mechanical behaviour of aluminium matrix composites

Aluminium metal matrix composites (AMMCs) are the fastest growing metal matrix composites (MMCs) for the applications in several fields i.e.; automobile, aerospace and structural. The properties of these composites depend upon the reinforcement and their fabrication methods. This study focused on the accumulation of the ceramic reinforcement, silicon nitride (Si3N4) to the aluminium (Al) matrix in different weight proportions. Further, the significant methods for developing these materials and their effect on the various properties of the Al-Si3N4 composites have also been reviewed. The microstructural properties indicate the more uniform distribution of the reinforcing particles within the matrix for these composites developed by powder metallurgy method. From the literature, it has been also concluded that the addition of the ceramic reinforcement with appropriate weight percentages enhances the mechanical and tribological properties of the composites.