CE08 - Matériaux métalliques et inorganiques et procédés associés

Mechanism Analysis during THIck samples solidification of FAceted systems – MATHIFA

Submission summary

Many materials produced by melt crystallization present solid-liquid interfaces with a faceted morphology and associated kinetic behavior. Despite the recent progress as concern solidification in thin samples of materials presenting a faceted morphology during growth, the solidification dynamics in 3D still remains not enough understood in depth although 3D is the real-life industrial configuration. This constitutes a major bottleneck for the solidification mechanism modelling and for the optimization of predictive simulation tools capable of controlling elaboration processes and the final properties of strategic materials, such as photovoltaic silicon. The main objective of the MATHIFA project is to make major breakthrough on the analysis of solidification mechanisms in the case of faceted systems in 3D samples. To fulfil this objective, an original experimental approach with in situ characterization of directional solidification of transparent model alloys, which freeze with faceted interface, in cylindrical thick samples will be implemented. Visualization and characterization of the faceted growth front will be done in real time. The studies proposed on MATHIFA project are essential to understand the growth dynamics of faceted microstructures, the mechanisms of crystal-grain competition, and the formation of defects in the solid.

Project coordination

FATIMA LISBOA MOTA (Institut des Matériaux, de Microélectronique et des Nanosciences de Provence)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

IM2NP Institut des Matériaux, de Microélectronique et des Nanosciences de Provence
INSP Institut des nanosciences de Paris

Help of the ANR 171,366 euros
Beginning and duration of the scientific project: - 42 Months

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