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Anticorrosion performance of a Zr-based architectured substrate/coating system

After Zr+ HiPIMS etching, four Zr-based substrate/coating systems were synthesized on 304L stainless steel by hybrid pulsed DCMS/HiPIMS. SEM-BSE images showed an open columnar structure. The coating effect on corrosion was investigated in nitric acid and compared to tantalum considered as reference...

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Bibliographic Details
Published in:Corrosion science 2023-08, Vol.220, p.111305, Article 111305
Main Authors: Chabanon, A., Schlegel, M.L., Michau, A., Puga, B., Schuster, F., Maskrot, H., Narasimalu, S., Dong, Z., Balbaud-Célérier, F.
Format: Article
Language:English
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Summary:After Zr+ HiPIMS etching, four Zr-based substrate/coating systems were synthesized on 304L stainless steel by hybrid pulsed DCMS/HiPIMS. SEM-BSE images showed an open columnar structure. The coating effect on corrosion was investigated in nitric acid and compared to tantalum considered as reference material in terms of corrosion behavior. Electrochemical measurements in nitric acid at boiling temperature showed that the corrosion resistance of Zr-based coatings was similar to tantalum (coating and bulk) and better than uncoated 304L steel after 2 d of immersion. Longer immersion tests confirmed these results. No intergranular corrosion was observed on coated samples compared to uncoated 304L. •Zr-based coatings were deposited by a hybrid pulsed DCMS/HiPIMS process.•stacking of several (Zr/ZrO2) coating sequences increases the density.•An open columnar structure is observed for substrate/coating systems.•Zr-based coatings decrease the corrosion rate of 304 L steel in nitric acid.•(Zr/ZrO2) coating sequences improve corrosion resistance.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2023.111305