Tribological, Micromechanical and Structural Characterizations of PA66 Composites Filled Cu Micro-particles

This research assessment deals with the elaboration and the characterization of polyamide 6–6 (PA66)/copper (Cu) micro-composites. Four weight proportions of the Cu particles in the range of 0–15 wt% were considered. Composites were developed using an internal mixer with two blades to achieve the mechanical mixing. This first step is followed by an injection molding process. Scanning Electron Microscopy (SEM) and micro-tomography were utilized to qualitatively analyse the distribution of copper particles in the PA66 matrix. The visualizations revealed that the copper particles were spherically shaped and evenly distributed throughout the matrix. The study also used nano-indentation to quantify its measurements like indentation hardness and indentation elastic modulus of the different composites. It was demonstrated that both properties were enhanced by incorporating Cu particles. The friction characteristics of PA66 composites were compared to those of pure PA66. It was shown that copper powder improved considerably the friction and wear properties of the composites. Overall, the study's results offer insightful informations about the characteristics of copper-filled PA66 composites and their prospective uses in fields where minimal friction is sought.