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http://dx.doi.org/10.5695/JKISE.2007.40.4.180

Steam Pressure Effects on the Oxidation of Low-Sn Zircaloy-4 at High Temperatures  

Yang, Sung-Woo (Kyung Hee University)
Park, Kwang-Heon (Kyung Hee University)
Publication Information
Journal of the Korean institute of surface engineering / v.40, no.4, 2007 , pp. 180-184 More about this Journal
Abstract
A new zirconium alloy, low-Sn Zircaloy-4 was investigated to see the effects of high pressure steam on the oxidation at high temperatures. High pressure steam turned out to enhance the oxidation at high temperatures below $1000^{\circ}C$. The oxide layer groved to deviate from the uniform layer under high steam pressures, and usually cracks were found at the thicker parts in the oxide layer. High pressure steam seems to destabilize the tetragonal oxides near the metal layer, and the monoclinic oxides transformed from the destabilized tetragonal oxides are structurally not sound, resulting in enhanced oxidation under high pressure steam.
Keywords
Zircaloy; Oxidation; High Pressure Steam; Tetragonal oxides;
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