On the chemical compatibility between Zr-4 substrate and well-bonded Cr2AlC coating. Issue 1 (January 2019)

• Record Type: Journal Article
• Authors: Zhang, Jie; Tian, Zhilin; Zhang, Haibin; Zhang, Lei; Wang, Jingyang
• Is Part Of: Journal of materials science & technology. Volume 35:Issue 1(2019)
• Page Start: 1
• Page End: 5
• Publication Date: 2019-01
• Subjects: Accident tolerant fuel -- Cr2AlC coating -- Thermochemical compatibility; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2018.09.005
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstract: Accident tolerant fuel (ATF) for the light water reactor has gained wide attentions after the Fukushima accident. To enhance the accident-tolerance of the nuclear system, one strategy is to modify the Zr-based alloy cladding surface with advanced ceramic coating. In this work, monolithic and dense Cr2 AlC coating has been synthesized by magnetron sputtering. The as-grown Cr2 AlC coating exhibits good chemical compatibility with Zr-based alloy substrate as well as mechanical integrity under both pull-off and scratch tests. The coating system also presents moderate thermochemical compatibility at 800 °C but degrades above 1000 °C under simulated loss-of-coolant accident (LOCA) conditions.