锆合金氧化膜的内应力计算

Calculation of Internal Stress in Oxide Films of Zirconium Alloy

锆合金氧化膜中的内应力是锆合金腐蚀动力学中的重要影响因素,目前没有统一的方法得到氧化膜中内应力的大小,且数值差异较大。在传统的实验和理论方法的基础上,建立ZrO_(2)/Zr合金双层氧化弯曲几何模型,计算不同腐蚀状态下氧化膜中的内应力大小,得到内应力变化规律并分析其影响因素,为锆合金氧化膜内应力研究提供了一种较为可靠的方法。

The internal stress in the oxide film of zirconium alloy is an important factor in the corrosion kinetics of zirconium alloy.At present,there is no unified method to obtain the internal stress in the oxide film,and the data is quite different.Based on the traditional experimental and theoretical methods,the double layer oxidation bending model of ZrO_(2)/Zr is established,the internal stress in the oxide film under different corrosion conditions is calculated,the change rule of the internal stress is obtained and the influencing factors is analyzed,which provides a more reliable way for the research of the internal stress in the oxide film of zirconium alloy.