Tribological Behavior of High Entropy Alloy Coatings: A Review

As engineering equipment is applied in a harsh environment with heavy load, cyclic stress, and wide range of temperatures, the reliability becomes challenge, especially when wear contact involved. Hence, design exploitation an advanced alloy surface may hold key to control minimize friction transmission system for safety-critical applications. High entropy alloys (HEAs) or multi-component have been proved outstanding mechanical properties, corrosion resistance, high-temperature oxidation resistance potential use as reduction coatings. In this paper, properties development status HEAs coating systems tribological applications were reviewed gain better understanding their advantages limitations obtained by different preparation methods. Specifically, focus was paid magnetron sputtering, laser cladding, thermal spraying since these three deposition methods more widely used wear-resistant friction-reducing Building upon this, correlation between composition, well characteristics coatings are summarized. Finally, problems be solved move field forward future trend tribology application HEA outlined.