Research Progress of Cold Spraying High - Entropy Alloys

Abstract

High - entropy alloys are a kind of novel multi - principal component alloy that recently breaks through the design concept of traditional alloys, which were significantly superior to conventional metallic materials in compressive strength, hardness, thermal stability, wear resistance and corrosion resistance. Meanwhile, cold spray is a solid - state deposition technology, attracting great attention around the world in preparing high - performance coatings, repairing, and remanufacturing parts, and additive manufacturing parts and components, which could provide a new approach for preparing high - entropy alloys. In this work, by analyzing the research status of cold spraying high entropy alloy at home and abroad, the recent progress of cold spraying high - entropy alloys was reviewed from feedstock powders preparation, spraying process parameter optimization, microstructure and properties of coating, particle bonding mechanisms, and post - treatment processes. Besides, the future research direction of cold spraying high performance high - entropy alloys was also prospected.

Keywords

• cold spray|high - entropy alloy|coating|additive manufacturing