| Abstract Scope |
The atom probe tomography, with the capability of 3D atom-by-atom mapping, allows us to quantitatively characterize at the nanoscale all the element. However, the hydrogen present a challenge due to its presence in the analysis chamber, low field of evaporation and high recombination capacity. The project is to develop a strong method of characterisation and quantification of hydrogen within the atom probe tomography. In this talk, we will show how the atom probe tomography can support the development of new materials for hydrogen industry, as well for the storage or understand the mechanism of the embrittlement. To develop this method, we set up a process for maintaining cryogenic conditions in a cameca eikos-uv atom probe and worked on conventional 15-5PH and CrMoV materials, which have the particularity of trapping hydrogen and being sensitive to embrittlement. |