Corrosion and oxidation behavior of high entropy alloys in extreme and harsh environments: A perspective on steam corrosion

Abstract

High-Entropy Alloys (HEAs) have emerged as a novel class of materials exhibiting excellent mechanical, thermal, and corrosion-resistant properties. This paper discusses the application of HEAs in high-temperature steam environments, focusing on their potential as advanced materials for components in geothermal systems, nuclear power plants, and hydrogen fuel cells. These applications demand materials that can withstand harsh conditions, including elevated temperatures, aggressive fluids, and corrosive environments. With their unique composition of multiple elements in equimolar or near-equimolar ratios, HEAs present an intriguing prospect for addressing these challenges. The review summarizes recent research findings on the performance of HEAs in harsh conditions, highlighting their corrosion resistance. The versatility of HEAs, coupled with ongoing advancements in alloy design and processing techniques, opens new avenues for optimizing these alloys for enhanced durability and efficiency. A perspective on the current state of research and future prospects on the above has been discussed here. It sets the stage for further exploration of HEAs as promising candidates for sustainable and resistant materials in aggressive environment applications.