Atom Probe Analysis of Ex Situ Gas-Charged Stable Hydrides

Daniel Haley; Paul A. J. Bagot; Michael P. Moody

doi:10.1017/S1431927616012630

Atom Probe Analysis of Ex Situ Gas-Charged Stable Hydrides

Materials Science 2017-11-20 v1

Authors: Daniel Haley , Paul A. J. Bagot , Michael P. Moody

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

In this work, we report on the atom probe tomography analysis of two metallic hydrides formed by pressurized charging using an ex situ hydrogen charging cell, in the pressure range of 200-500 kPa (2-5 bar). Specifically we report on the deuterium charging of Pd/Rh and V systems. Using this ex situ system, we demonstrate the successful loading and subsequent atom probe analysis of deuterium within a Pd/Rh alloy, and demonstrate that deuterium is likely present within the oxide-metal interface of a native oxide formed on vanadium. Through these experiments, we demonstrate the feasibility of ex situ hydrogen analysis for hydrides via atom probe tomography, and thus a practical route to three-dimensional imaging of hydrogen in hydrides at the atomic scale.

Keywords

atom probe tomography metallic hydrides ex situ hydrogen charging deuterium palladium-rhodium alloy vanadium oxide three-dimensional hydrogen imaging

Cite

@article{arxiv.1711.06667,
  title  = {Atom Probe Analysis of Ex Situ Gas-Charged Stable Hydrides},
  author = {Daniel Haley and Paul A. J. Bagot and Michael P. Moody},
  journal= {arXiv preprint arXiv:1711.06667},
  year   = {2017}
}

Related papers

View all related →