Microstructure and corrosion characteristics of CrCuFeMoNi HEA coatings with different compositions in high-temperature and high-pressure water. (3rd May 2019)

• Record Type: Journal Article
• Authors: Chen, Q S; Liu, C H; Long, J P; Wang, J; Zhang, R Q; Yang, H Y; Zhang, W; Yao, F Y; Zhao, S; Zhang, Q
• Is Part Of: Materials research express. Volume 6:Number 8(2019)
• Publication Date: 2019-05-03
• Subjects: magnetron sputtering -- HEA coating -- accident-tolerant fuel (ATF) -- corrosion resistance; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/ab19ed
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: Surface modification technology consists of a coating technique is one important method to improve the operational performance of nuclear fuel cladding. In this paper, different compositions of a CrCuFeMoNi high-entropy alloy (HEA) coating were deposited on a Zr-4 substrate by magnetron co-sputtering. The microstructures, mechanical properties and high-temperature corrosion behaviors of the CrCuFeMoNi HEA coatings were investigated. All as-deposited HEA coatings have an fcc structure and are well adhered to the Zr-4 substrate. The nanoindentation and autoclave test results showed that the as-deposited Cr0.26 Cu0.3 Fe0.1 Mo0.15 Ni0.19 HEA coating had superior hardness (12.5 GPa) and high-temperature corrosion resistance relative to others. The corrosion mechanisms of the CrCuFeMoNi HEA coatings with different compositions are also discussed.