Microstructure and tribological properties of Al2O3 reinforced FeCoNiCrMn high entropy alloy composite coatings by cold spray

High entropy alloys (HEAs) are novel materials that have been extensively studied in recent years. In this work, Al2O3 particles reinforced FeCoNiCrMn HEA composite coatings were fabricated by cold spray. The microstructure, mechanical and tribological properties of the composites coating compared with those pure coating. results indicate spray is a promising process to fabricate coatings. made work had higher hardness than due reinforcing effect well distributed particles. also improved wear-resistance nearly 50% reduction wear rate as improvement was formation tribo-layer which can effectively withstand material loss. reveal main mechanisms for dominated adhesive comparison abrasive This study proves feasibility fabrication high-performance