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Correlations of the Steam Oxidation Rate Constant of BWR Alloy Zircaloy-2 at 800–1400 °C
Oxidation of Metals ( IF 2.1 ) Pub Date : 2021-07-23 , DOI: 10.1007/s11085-021-10070-7
Yong Yan 1 , Benton E. Garrison 1 , Andrew T. Nelson 1 , Dan Lutz 2
Affiliation  

Steam oxidation experiments were conducted at 800–1400 °C with boiling water reactor alloy Zircaloy-2 strip specimens. Sample weight gain measurements were performed on the oxidized specimens before and after the test and were compared to oxygen pickup calculations using the Cathcart–Pawel correlation. The results showed that Zircaloy-2 follows the parabolic law at temperatures above 1000 °C. At or below 1000 °C, the oxidation rate was very low when compared to Cathcart–Pawel correlation and can be represented by a cubic expression. Arrhenius expressions are given to describe the parabolic rate constants at temperatures above 1000 °C and cubic rate constants are provided for temperatures at or below 1000 °C. The weight gains calculated by our Arrhenius correlations are in excellent agreement with the measured sample weight gains at all test temperatures.



中文翻译:

BWR Alloy Zircaloy-2 在 800–1400 °C 下蒸汽氧化速率常数的相关性

蒸汽氧化实验是在 800-1400 °C 下用沸水反应堆合金 Zircaloy-2 条状试样进行的。在测试前后对氧化样品进行样品增重测量,并使用 Cathcart-Pawel 相关性与吸氧计算进行比较。结果表明,Zircaloy-2 在高于 1000 °C 的温度下遵循抛物线定律。在 1000 °C 或以下,与 Cathcart-Pawel 相关性相比,氧化速率非常低,可以用三次表达式表示。Arrhenius 表达式用于描述高于 1000 °C 的温度下的抛物线速率常数,并为等于或低于 1000 °C 的温度提供立方速率常数。

更新日期:2021-07-23
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