Workshop: Hydrogen Analysis by Atom Probe Tomography

Session

Hydrogen charging via unconventional methods

17 Apr 2024, 11:30

Room 203 (large seminar room) (Max-Planck-Institut für Eisenforschung GmbH)

19. APT of Deuterium in tungsten for fusion applications

Hazel Gardner (UKAEA)

17/04/2024, 11:30

W is a candidate material for plasma-facing components but is also being considered as a liquid metal corrosion barrier in the breeder blanket of future fusion devices. In both scenarios, the W will be exposed to tritium. Radioactive tritium inventory must be controlled to ensure safe, fuel-efficient powerplant operation; it is essential to understand hydrogen isotope trapping and transport in...

22. In-situ Hydrogen Implantation in Atom Probe Tomography and Investigation of Hydrogen Embrittlement

Mr Jean-Baptiste Maillet (Université de Rouen, GPM)

17/04/2024, 11:50

The investigation of hydrogen in Atom Probe Tomography remains a relevant challenge. Its low mass, high diffusion coefficient, and presence as a residual gas in vacuum chambers generate multiple complications for APT investigations. Different solutions were proposed in the literature to charge our sample, such as ex-situ charging coupled with cryotransfer [1], or hydrogen charging at high...

8. Gas exposure devices for atom probe experiments

Benedict Ott

17/04/2024, 12:10

The detection of hydrogen in atom probe tomography (APT) tips is challenging due to the residual hydrogen in the currently used stainless steel measurement chambers. While adjusting measurement parameters can reduce the presence of contaminant hydrogen, complete elimination is not feasible and interpretability is therefore limited. Consequently, Deuterium or Tritium is employed as an...

21. Gas phase deuterium charging of polymer nanocomposites for APT analysis

James Douglas (Imperial College London)

17/04/2024, 15:15

APT analysis of polymers has been relatively limited compared to many other material systems due to sample preparation, data collection and data analysis challenges. Polymers are often beam sensitive and Focused Ion Beam (FIB) sample preparation is often avoided, leading to approaches based on spray deposition of polymer films [1] or self assembling monolayers [2] onto pre-fabricated...

1. Interaction of Hydrogen/ Deuterium with defects in Dual Phase Steels

Dr Aparna Saksena

17/04/2024, 15:35

Hydrogen (H) is the most abundant element in the Universe. It has a great potential to replace the C-based fuels as a more sustainable energy solution. In order to support and implement this transition towards a more sustainable H economy, understaning the interaction of H with its surrounding infrastructure requires immediate attention. H embrittlement (HE) is a phenomenon that causes abrupt...