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Abstract 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… Click to show full abstract
Abstract 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 °C, 1000 °C and 1100 °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.
Journal Title: Corrosion Science
Year Published: 2021
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