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Diffusion in Metals and Minerals
The DMM group mainly models complex diffusion processes in metals and minerals on micro and meso scales described by continuum methods, like diffusion equations combined with phase-field theory.
One of our research areas is grain growth in ceramics, which is accompanied by the pore evolution and grain boundary diffusion of dopants. Another aspect of our research concerns Kirkendall porosity occurring during interdiffusion in multi-component alloys resulting in a change of the mechanical properties. Once talking about minerals, simulation of texture evolution throughout solidification processes in the presence of the diffusion and convection effects in the liquid phase as well as nucleation events are of critical importance. All these processes in complex multi-phase systems can be modeled by combining different types of phase-field models and relevant diffusion models utilizing the modern thermodynamic and kinetic databases for the evaluation of diffusion parameters. The achieved numerical studies are supported by experimental data provided by the leading laboratories in Germany.
- Phase-field modeling for diffusion chronometry in magmatic systems
- Grain-boundary diffusion in polycrystalline materials
- Automated assessments of atomic mobility parameters
- Diffusion couple modeling
- Phase-field modeling of Kirkendall pore growth in complex alloys