Abstract
As hydrogen is touted as a key player in the decarbonization of modern society, it is critical to enable quantitative hydrogen (H) analysis at high spatial resolution and, if possible, at the atomic scale. H has a known deleterious impact on the mechanical properties (strength, ductility, toughness) of most materials that can hinder their use as part of the infrastructure of a hydrogen-based economy. Enabling H mapping including local hydrogen concentration analyses at specific microstructural features is essential for understanding the multiple ways that H affect the properties of materials including embrittlement mechanisms and their synergies. In addition, spatial mapping and quantification of hydrogen isotopes is essential to accurately predict tritium inventory of future fusion power plants thus ensuring their safe and efficient operation. Atom probe tomography (APT) has the intrinsic capability to detect H and deuterium (D), and in principle the capacity for performing quantitative mapping of H within a material’s microstructure. Yet, the accuracy and precision of H analysis by APT remain affected by complex field evaporation behavior and the influence of residual hydrogen from the ultrahigh vacuum chamber that can obscure the signal of H from within the material. The present article reports a summary of discussions at a focused workshop held at the Max-Planck Institute for Sustainable Materials in April 2024. The workshop was organized to pave the way to establishing best practices in reporting APT data for the analysis of H. We first summarize the key aspects of the intricacies of H analysis by APT and then propose a path for better reporting of the relevant data to support interpretation of APT-based H analysis in materials.
| Original language | English |
|---|---|
| Pages (from-to) | 1205-1220 |
| Number of pages | 16 |
| Journal | Microscopy and Microanalysis |
| Volume | 30 |
| Issue number | 6 |
| DOIs | |
| State | Published - Dec 1 2024 |
Funding
This workshop was organized and chaired by Aparna Saksena, Baptiste Gault, Xavier Sauvage, and Paul Bagot and sponsored by the International Field Emission Society (IFES, http://www.fieldemission.org/ ). The organizers are grateful for financial support by Thermofisher Scientific, Cameca Instrument, and Ferrovac. Apart from the corresponding authors, and the chairs, the authors were listed alphabetically. The editors Ann Chiaramonti & John Mansfield are thanked for proof reading and providing valuable feedback. Uwe Tezins, Andreas Sturm, and Christian Bross are thanked for technical support with the atom probe facility at the MPI SUSMAT. B.G. acknowledges financial support from the ERC-CoG-SHINE-771602. The APT group at MPI SUSMAT is grateful to the Max-Planck Gesellschaft and the BMBF for the funding of the Laplace Project, the BMBF for the UGSLIT project. B.G. and A.S. are grateful for funding from the DFG for SFB TR103/A4, and the CRC 1625/B4. T.M.S. is grateful for funding from the DFG through the award of the Leibniz Prize 2020. J.D. is grateful for support via EPSRC grant EP/V007661/1. R.G. thanks to Japan Society for the Promotion of Science (JSPS) KAKENHI via Grant Number JP24K08249. B.M.J. is a recipient of the WINNINGNormandy Program supported by the Normandy Region and would like to acknowledge that this project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk\u0142odowska-Curie grant agreement No. 101034329. M.K. acknowledges financial support from the DFG through DIP Project No. 450800666. P.F. and B.O. work has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 Research and Innovation Programme (Grant Agreement No. 805065). L.D. acknowledges support from STFC grants ST/Y004817/1, ST/T002328/1, and ST/W001128/1. This workshop was organized and chaired by Aparna Saksena, Baptiste Gault, Xavier Sauvage, and Paul Bagot and sponsored by the International Field Emission Society (IFES, http://www. fieldemission.org/). The organizers are grateful for financial support by Thermofisher Scientific, Cameca Instrument, and Ferrovac. Apart from the corresponding authors, and the chairs, the authors were listed alphabetically. The editors Ann Chiaramonti & John Mansfield are thanked for proof reading and providing valuable feedback. Uwe Tezins, Andreas Sturm, and Christian Bross are thanked for technical support with the atom probe facility at the MPI SUSMAT. B.G. acknowledges financial support from the ERC-CoG-SHINE-771602. The APT group at MPI SUSMAT is grateful to the Max-Planck Gesellschaft and the BMBF for the funding of the Laplace Project, the BMBF for the UGSLIT project. B.G. and A.S. are grateful for funding from the DFG for SFB TR103/A4, and the CRC 1625/B4. T.M.S. is grateful for funding from the DFG through the award of the Leibniz Prize 2020. J.D. is grateful for support via EPSRC grant EP/ V007661/1. R.G. thanks to Japan Society for the Promotion of Science (JSPS) KAKENHI via Grant Number JP24K08249. B.M.J. is a recipient of the WINNINGNormandy Program supported by the Normandy Region and would like to acknowledge that this project has received funding from the European Union\u2019s Horizon 2020 research and innovation programme under the Marie Sk\u0142odowska-Curie grant agreement No. 101034329. M.K. acknowledges financial support from the DFG through DIP Project No. 450800666. P.F. and B.O. work has received funding from the European Research Council (ERC) under the European Union\u2019s Horizon 2020 Research and Innovation Programme (Grant Agreement No. 805065). L.D. acknowledges support from STFC grants ST/Y004817/1, ST/T002328/1, and ST/W001128/1.
Keywords
- atom probe tomography
- deuterium
- hydrogen