Article ID Journal Published Year Pages File Type
7894764 Corrosion Science 2016 8 Pages PDF
Abstract
TEM thin foil specimens prepared using Zircaloy-4 coarse-grained samples were corroded by autoclaving at 250 °C and 280 °C in lithated water for a short time exposure, and the initial oxidation process before the formation of ZrO2 was investigated by TEM. The results show a variation of the crystal structure along with the increase of oxygen contents at the initial oxidation stage. When the Zr/O atomic ratio reached 6-7, 3 and 1, a commensurable long period super-lattice 9a0-2H and sub-oxides with hcp and fcc ordered structure were formed. When the Zr/O atomic ratio was 0.8, monoclinic ZrO2 was detected.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
Authors
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