Interaction of Small Ceramic Particles with a Dendritic Solidification Front | Zendy

Lierfeld T. | Zendy; Kolbe M. | Zendy; Eggeler G. | Zendy; Herlach D. M. | Zendy

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Interaction of Small Ceramic Particles with a Dendritic Solidification Front

Author(s) -

Lierfeld T.,

Kolbe M.,

Eggeler G.,

Herlach D. M.

Publication year - 2008

Publication title -

advanced engineering materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.938

H-Index - 114

eISSN - 1527-2648

pISSN - 1438-1656

DOI - 10.1002/adem.200700357

Subject(s) - materials science , ceramic , front (military) , dendrite (mathematics) , convection , composite material , mechanics , meteorology , geometry , physics , mathematics

The interaction of ceramic particles with a dendritic solidification front was investigated by comparative solidification experiments in reduced gravity and under terrestrial conditions. Inductive melting of Ni 98 Ta 2 samples containing Ta 2 O 5 particles under gravity induces strong forced convection, which hinders the engulfment of particles in the dendrite stem. Comparative experiments in reduced gravity lead to a drastic decrease of forced convection. That enables the entrapment of Ta 2 O 5 particles during rapid propagation of Ni 98 Ta 2 dendrites.

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