Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Molecular dynamics simulations of hydrogen diffusion in aluminum

Journal Article · · Journal of Physical Chemistry. C
 [1];  [1];  [1];  [1]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
In this study, hydrogen diffusion impacts the performance of solid-state hydrogen storage materials and contributes to the embrittlement of structural materials under hydrogen-containing environments. In atomistic simulations, the diffusion energy barriers are usually calculated using molecular statics simulations where a nudged elastic band method is used to constrain a path connecting the two end points of an atomic jump. This approach requires prior knowledge of the “end points”. For alloy and defective systems, the number of possible atomic jumps with respect to local atomic configurations is tremendous. Even when these jumps can be exhaustively studied, it is still unclear how they can be combined to give an overall diffusion behavior seen in experiments. Here we describe the use of molecular dynamics simulations to determine the overall diffusion energy barrier from the Arrhenius equation. This method does not require information about atomic jumps, and it has additional advantages, such as the ability to incorporate finite temperature effects and to determine the pre-exponential factor. As a test case for a generic method, we focus on hydrogen diffusion in bulk aluminum. We find that the challenge of this method is the statistical variation of the results. However, highly converged energy barriers can be achieved by an appropriate set of temperatures, output time intervals (for tracking hydrogen positions), and a long total simulation time. Our results help elucidate the inconsistencies of the experimental diffusion data published in the literature. The robust approach developed here may also open up future molecular dynamics simulations to rapidly study diffusion properties of complex material systems in multidimensional spaces involving composition and defects.
Research Organization:
Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1249082
Report Number(s):
SAND--2016-1481J; 619468
Journal Information:
Journal of Physical Chemistry. C, Journal Name: Journal of Physical Chemistry. C Journal Issue: 14 Vol. 120; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (38)

Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
An analytical bond-order potential for the copper–hydrogen binary system journal January 2015
The diffusivity of hydrogen in aluminum journal June 1986
The relation between hydrogen desorption and the surface conditions of high purity aluminium journal April 1981
Diffusion of hydrogen in solid aluminium journal November 1977
Reversible hydrogen trapping at grain boundaries in superpure aluminium journal September 1980
Diffusion of hydrogen in high purity aluminium journal February 1981
Diffusion of hydrogen in pure large grain aluminum journal March 1982
Hydrogen diffusion in aluminum journal October 1983
Hydrogen diffusivity in aluminium measured by a glow discharge permeation method journal July 1994
The diffusion and trapping of hydrogen in high purity aluminum journal November 1998
Superior light metals by texture engineering: Optimized aluminum and magnesium alloys for automotive applications journal February 2013
Corrosion-induced hydrogen embrittlement in aluminum alloy 2024 journal May 2006
Electrochemical aspects of exfoliation corrosion of aluminium alloys: The effects of heat treatment journal April 2011
Relationship between alloy composition, microstructure and exfoliation corrosion in Al–Zn–Mg–Cu alloys journal October 2011
Comparative molecular dynamics study of fcc-Al hydrogen embrittlement journal September 2015
A space–time-ensemble parallel nudged elastic band algorithm for molecular kinetics simulation journal February 2008
Application of the G-JF discrete-time thermostat for fast and accurate molecular simulations journal February 2014
Development of high pressure gaseous hydrogen storage technologies journal January 2012
Hydrogen environment embrittlement of stable austenitic steels journal November 2012
An atomistically validated continuum model for strain relaxation and misfit dislocation formation journal June 2016
Improving solid-state hydriding and dehydriding properties of the LiBH4 plus MgH2 system with the addition of Mn and V dopants journal November 2010
Solid state storage of hydrogen and its isotopes: An engineering overview journal January 2015
Some comments on the misfit and coherency loss of AlSc particles in Al?Sc alloys journal June 2005
Hydrogen-storage materials for mobile applications journal November 2001
Nanomaterials for renewable energy production and storage journal January 2012
Improved tangent estimate in the nudged elastic band method for finding minimum energy paths and saddle points journal December 2000
A climbing image nudged elastic band method for finding saddle points and minimum energy paths journal December 2000
Nosé–Hoover chains: The canonical ensemble via continuous dynamics journal August 1992
A simple and effective Verlet-type algorithm for simulating Langevin dynamics journal January 2013
Explicit reversible integrators for extended systems dynamics journal April 1996
Hydrogen diffusion in aluminium at high temperatures journal June 1983
Canonical dynamics: Equilibrium phase-space distributions journal March 1985
Molecular-dynamics study of a three-dimensional one-component model for distortive phase transitions journal February 1978
Hydrogen in aluminum: First-principles calculations of structure and thermodynamics journal April 2004
First-Principles Theory of Hydrogen Diffusion in Aluminum journal August 2008
Measurement of the Diffusion Coefficient and Solubility of Hydrogen in Solid Aluminum [固体アルミニウム中の水素の拡散係数と溶解度の測定] journal January 1979
Grain Boundary Effect on Diffusion of Hydrogen in Pure Aluminum journal January 1991

Cited By (3)


Similar Records

Molecular dynamics simulations of substitutional diffusion
Journal Article · Sat Dec 17 19:00:00 EST 2016 · Computational Materials Science · OSTI ID:1333612

Atomistic simulations of helium, hydrogen, and self-interstitial diffusion inside dislocation cores in tungsten
Journal Article · Thu Jan 09 19:00:00 EST 2020 · Nuclear Fusion · OSTI ID:1604004

Modelling of monovacancy diffusion in W over wide temperature range
Journal Article · Fri Mar 28 00:00:00 EDT 2014 · Journal of Applied Physics · OSTI ID:22271167