An electro-chemo-mechanical framework for predicting hydrogen uptake in metals due to aqueous electrolytes

09/18/2022
by   T. Hageman, et al.
0

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.

READ FULL TEXT

page 5

page 12

page 14

page 17

page 18

page 20

page 22

page 23

research
07/03/2023

A phase field-based framework for electro-chemo-mechanical fracture: crack-contained electrolytes, chemical reactions and stabilisation

We present a new theoretical and computational framework for modelling e...
research
01/11/2023

A Particle Method for 1-D Compressible Fluid Flow

This paper proposes a novel particle scheme that provides convergent app...
research
05/25/2021

A hybrid discrete-continuum approach to model hydro-mechanical behaviour of soil during desiccation

Desiccation cracking in clayey soils occurs when they lose moisture, lea...
research
07/20/2023

Numerical simulation of forerunning fracture in saturated porous solids with hybrid FEM/Peridynamic model

In this paper, a novel hybrid FEM and Peridynamic modeling approach prop...
research
06/29/2022

A phase field electro-chemo-mechanical formulation for predicting void evolution at the Li-electrolyte interface in all-solid-state batteries

We present a mechanistic theory for predicting void evolution in the Li ...
research
04/08/2023

Phase-field modeling of pitting and mechanically-assisted corrosion of Mg alloys for biomedical applications

A phase-field model is developed to simulate the corrosion of Mg alloys ...
research
12/06/2018

Parameters identification method for breast biomechanical numerical model

Bio-mechanical breast simulations are based on a gravity free geometry a...

Please sign up or login with your details

Forgot password? Click here to reset