Local chemical composition of defects (B03)

• Subject Area: Thermodynamics and Kinetics as well as Properties of Phases and Microstructure of Materials
• Term: since 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 409476157

Defect phases in grain boundaries and precipitates of Ni-Cu-Nb solid solutions and Nb7(Ni,Al/Cu)6 intermetallic phases are identified by atomic probe tomography. Furthermore, the controlled synthesis of defect phases is realised by means of a unique in vacuo experimental setup using oxygen and nitrogen plasmas in the preparation of atom probe samples. Correlative structural and chemical analysis by transmission electron microscopy and atom probe tomography will be used for holistic characterisation of defect phases.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1394: Structural and Chemical Atomic Complexity: From Defect Phase Diagrams to Material Properties
• Major Instrumentation: UHV Suitcase Package
• Instrumentation Group: 8300 Labor-Vakuumeinrichtung
• Applicant Institution: Rheinisch-Westfälische Technische Hochschule Aachen
• Project Head: Dr.-Ing. Marcus Hans