Superior anticorrosion performance of crystal-amorphous FeMnCoCrNi high-entropy alloy. (15th March 2022)

• Record Type: Journal Article
• Authors: Xiao, Lili; Zheng, Zhiqiang; Huang, Ping; Wang, Fei
• Is Part Of: Scripta materialia. Number 210(2022)
• Publication Date: 2022-03-15
• Subjects: FeMnCoCrNi -- High-entropy alloy -- Amorphous -- Anticorrosion -- Passivation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2021.114454
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: In order to explore metal material with better corrosion resistance, this work presented a new crystal-amorphous FeMnCoCrNi high entropy alloy (HEA) mode as the mixture of nanocrystalline and amorphous shell fabricated by magnetron sputtering technique. Due to the wide and remarkable Cr-enrichment of amorphous shell, which provides higher driving force and diffusion rate for Cr atom, the crystal-amorphous FeMnCoCrNi HEA exhibits strong passivation behavior because of the formed passive layer about 40 nm thick. The corrosion current density of the crystal-amorphous FeMnCoCrNi HEA is about 0.147 nAcm −2 that effectively inhibit pitting corrosion, indicating the superior anticorrosion performance. Then, the crystal-amorphous FeMnCoCrNi HEA presented herein provides a new mode for developing advanced materials with outstanding anticorrosion ability. Graphical abstract: Image, graphical abstract