期刊
CORROSION SCIENCE
卷 187, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109494
关键词
ZrO2/Cr bilayer coating; High-temperature steam oxidation; Zr-1Nb alloy; Plasma electrolytic oxidation; Filtered cathodic vacuum arc deposition
资金
- Innovation Center of Nuclear Materials for National Defence Industry [ICNM-2020-YZ-04]
- NSFC-CNNC Joint-Fund [U2067217]
- National Natural Science Foundation of China [51671032]
- Beijing Natural Municipal Science Foundation [2172029]
- Fundamental Research Funds for the Central Universities [2019NTS05]
- BJAST-RD Funds [PY2020GJ26]
The ZrO2/Cr bilayer coating on Zr-1Nb alloy, fabricated by plasma electrolytic oxidation and filtered cathodic vacuum arc deposition duplex treatments, showed excellent steam oxidation resistance, with significantly reduced mass gain compared to the Cr-coated alloy at high temperatures.
The ZrO2/Cr bilayer coating on Zr-1Nb alloy fabricated by plasma electrolytic oxidation and filtered cathodic vacuum arc deposition duplex treatments had good steam oxidation resistance. The mass gain of ZrO2/Cr-coated alloy was about 36 %, 44 % and 59 % of that of Cr-coated one after 3600 s steam oxidation at 900 degrees C, 1000 degrees C and 1100 degrees C, respectively. The top Cr layer for Cr-coated and ZrO2/Cr-coated alloys was oxidized into a Cr2O3 layer, and then a part of Cr2O3 was reduced by Zr to form metallic Cr layer again after the as-prepared Cr layer was completely consumed.
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