A novel AlCrFeMoTi high-entropy alloy coating with a high corrosion-resistance in lead-bismuth eutectic alloy. (15th July 2021)

• Record Type: Journal Article
• Authors: Yang, Jian; Shi, Ke; Zhang, Wei; Chen, Qingsong; Ning, Zhien; Zhu, Changda; Liao, Jiali; Yang, Yuanyou; Liu, Ning; Zhang, Wei; Yang, Jijun
• Is Part Of: Corrosion science. Volume 187(2021)
• Publication Date: 2021-07-15
• Subjects: High entropy alloy -- AlCrFeMoTi coating -- Magnetron sputtering -- Lead-bismuth eutectic -- Corrosion resistance; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2021.109524
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: A novel amorphous AlCrFeMoTi HEA coating was prepared by magnetron co-sputtering method for the LBE-cooled fast reactor. The coating exhibits excellent LBE corrosion resistance compared with the uncoated F/M steel. Elemental aggregation, local oxidation and voids appear in the coating when the corrosion temperature reaches 650 ℃. Abstract: The amorphous AlCrFeMoTi high entropy alloy (HEA) coating with near-equal molar ratio was successfully deposited on F/M substrate by magnetron sputtering method. The coating exhibits excellent corrosion resistance against LBE with much thinner oxides scale and lower consumption of coating compared with the uncoated F/M steel (about an order of magnitude). The AlCrFeMoTi HEA coating has great potential in LBE-cooled fast reactor application. However, the elemental aggregation and local oxidation occur in the coating, and corrosion products of Fe-oxides and voids appear at the interface between the coating and substrate when the corrosion temperature reaches 650 ℃.