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Publication

Burst and oxidation behavior of Cr-coated Zirlo during simulated LOCA testing...

Publication Type
Journal
Journal Name
Journal of Nuclear Materials
Publication Date
Page Number
153679
Volume
564
Issue
1

Cr-coated Zr-alloys are a near-term cladding concept to improve reactor safety during accident scenarios. Burst and steam oxidation behavior of bare and Cr-coated Zirlo claddings were examined under simulated loss-of-coolant accident conditions. The 4.4 µm coating had no substantial effect on ballooning or opening geometry but did increase burst temperatures at higher pressures. The coating reduced steam oxidation of the cladding compared to bare specimens, but in regions of high strain, the coating developed through-cracks allowing rapid underlying zirconia formation.