Task:
Microstructural characterization of novel Fe based structural materials for energy applications, e.g. ODS steels, and investigation of deformation processes
Specific information on the method:
- TEM point resolution: 0.25 nm
- Information limit: 0.12 nm
- TEM magnification range: 25x – 1.5Mx
- STEM HAADF resolution: 0.16 nm
- STEM magnification range: 150x – 230Mx
- EDS energy resolution: ≤ 136 eV for Mn-Kα and 10 kcps
- Detection of elements: Z ≥ 5
Specific information on the equipment/instrumentation:
- Talos F200X
- 200kV FEG-TEM
- STEM system with BF/LAADF/HAADF detector
- 4 windowless SDD detectors arranged symmetrically with a total solid angle of 0.9 sr for ultrafast EDS mapping
- 2 low-background double-tilt holders
- In-situ straining sample holder
Samples/limitations:
- Suitable for solids
Examples of typical analytical questions:
- Characterization of ODS alloys in terms of spatial distribution, size distribution, number density, structure and chemical composition of nano-oxide particles
- Characterization of type, spatial distribution, size distribution, number density of neutron and ion irradiation-induced nanostructural features, e.g. dislocation loops and voids, in Fe-based alloys
- Observation of the interaction of gliding dislocations with nano-oxide particles and irradiation-induced features under mechanical stresses
Fields of research:
high-temperature materials, nuclear materials