论文标题
用于预测由于水性电解质而预测金属中氢摄取的电化学机械框架
An electro-chemo-mechanical framework for predicting hydrogen uptake in metals due to aqueous electrolytes
论文作者
论文摘要
我们提出了一种理论和数值方案，该方案可以在金属中量化任意环境和缺陷几何形状的氢气。这是通过明确解决电解质的电化学行为，氢和腐蚀反应，表面吸附的动力学以及氢的吸收，扩散和捕获机械构成固体中的。该新框架用于生成将吸收的氢与所施加电势，标本几何形状和流体速度相关联的地图。我们还提供了广义模型的简化版本，并对这些和其他现有模型进行基准预测，可根据广义电化学结果，从而确立有效性的制度。
We present a theoretical and numerical scheme that enables quantifying hydrogen ingress in metals for arbitrary environments and defect geometries. This is achieved by explicitly resolving the electrochemical behaviour of the electrolyte, the hydrogen and corrosion reactions, the kinetics of surface adsorption, and hydrogen uptake, diffusion and trapping in mechanically-deforming solids. This new framework is used to produce maps that relate the absorbed hydrogen with the applied potential, specimen geometry and fluid velocity. We also present simplified versions of our generalised model, and benchmark predictions of these and other existing models against the generalised electro-chemo-mechanical results, establishing regimes of validity.
