On the chemical compatibility between Zr-4 substrate and well-bonded Cr2AlC coating

• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2019,（1）
• 页码范围: 1-5
• 页数: 5页
• 语种: 英文

摘要

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 Cr2AlC coating has been synthesized by magnetron sputtering.The as-grown Cr2AlC coating exhibits good chemical compatibility with Zr-based alloy substrate as well as mechanical integrity under both pull-offand scratch tests.The coating system also presents moderate thermochemical compatibility at 800 ℃ but degrades above 1000 ℃ under simulated loss-of-coolant accident (LOCA) conditions.