Oxidation of Zircaloy-4 by oxygen and the production of water

Surface oxidation of Zircaloy-4 at 600K by adsorbed oxygen, nitric oxide, and sulfur dioxide

“…In the present study, we observe that oxygen exposures at 600 K up to 35.0 · 10 14 molecules/ cm 2 leave similar amounts of oxygen near the surface as compared to oxygen adsorption at 150 and 300 K [24]. Foord et al studied the interaction of NO and O 2 with polycrystalline zirconium at 300 K and reported almost complete dissociation [8].…”

“…It is also interesting to mention that in a study of 18 O 2 adsorption on Zry-4 at 150 and 300 K in a wide exposure range we observed no difference in the amount of oxygen residing near the surface [24]. In the present study, we observe that oxygen exposures at 600 K up to 35.0 · 10 14 molecules/ cm 2 leave similar amounts of oxygen near the surface as compared to oxygen adsorption at 150 and 300 K [24].…”

Surface Phenomena of Deuterized Ethanol Exposed Zircaloy-4 Surfaces

“…Zry-4 oxidation by water (H2O) and steam has been reported in many studies. [24][25][26][27][28][29][30][31][32] Ramsier's group reported that heating H 2 O/Zry-4 surface resulted in molecular desorption of water at both low and high temperatures. Also they investigated that the behavior of water with sulfur dioxide pre-exposed Zry-4 surface.…”

The Effects of Ar-ion Bombardment and Annealing of D2O/Zircaloy-4 Surfaces Using XPS and UPS

“…Zry-4 oxidation by water (H 2 O) and steam environments has been reported in numerous studies. [13][14][15][16][17][18] The interaction of H 2 O with Zry-4 was investigated using Auger electron spectroscopy (AES) and Temperature programmed desorption (TPD) methods by R. D. Ramsier et al. 13 They reported that following adsorption of H 2 O at 150 K, the Zr(MNV) and Zr(MNN) Auger features shifted by ~6.5 and 4.5 eV, respectively, indicating surface oxidation.…”