Optimized wear behaviors and related wear mechanisms of medium entropy alloy-based composite coatings

• DOI: 10.1016/j.jmrt.2024.01.108
• Publication Date: 2024-01-15T02:35:08Z
• Authors: Litao Ma; Dechao Zhao; Yihao Wang; Kangbao Wang; Jie Huang; Xinyuan Jin; Decheng Kong; Mingliang Wang; Tomiko Yamaguchi; Haowei Wang
• Keywords: Corrosion; Mining engineering. Metallurgy; Wear; Medium entropy alloy; 0103 physical sciences; TN1-997; 01 natural sciences; Composite coating; Resistance seam processing

In this work, the (10 wt%, 30 50 wt%) TiC reinforced AlFeCrCo medium entropy alloy (MEA) lightweight composite coatings with extremely low porosity were successfully fabricated on Mg substrate by resistance seam processing. The results showed that microstructure of coating was consisting a BCC-based MEA matrix and particles, good metallurgical bonding semi-coherent relationship formed between alloy. Furthermore, (5.6–6.5 g cm−3) improved corrosion over substrate. Specifically, exhibited optimized wear performance in dry, deionized water 3.5 wt% NaCl solution conditions increasing content, surpassing related high/medium coatings, which is attributed to formation coherent interface particles. first-principles calculations performed elucidate nature for higher strength TiC/MEA interface. these conditions, main mechanisms discussed terms adhesive wear, oxidative and/or corrosive connection their features electrochemical behaviors. Based elevated anti-corrosion ability, work has provided strategy fabricate advanced alloys endowing lower density, interfacial resistance, substantially contributing development high-performance coatings.