Capillary interactions between molten silicon and porous graphite

The capillary properties (wetting, infiltration) of the reactive Si/porous graphite system are studied by the sessile drop technique that enables the spreading and infiltration dynamics to be monitored in situ. The experiments are performed by varying the temperature, the type of graphite (porosity,...

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Bibliographic Details
Published in:Journal of materials science 2010-04, Vol.45 (8), p.2210-2217
Main Authors: Israel, R., Voytovych, R., Protsenko, P., Drevet, B., Camel, D., Eustathopoulos, N.
Format: Article
Language:English
Subjects:
Capillarity
Characterization and Evaluation of Materials
Chemical Sciences
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Engineering Sciences
Exothermic reactions
Grain size
Graphite
High vacuum
Htc2009
Infiltration
Infiltration (Hydrology)
Material chemistry
Materials
Materials Science
Polymer Sciences
Porosity
Rare gases
Silicon
Solid Mechanics
Temperature distribution
Vapor phases
Wetting
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Summary:The capillary properties (wetting, infiltration) of the reactive Si/porous graphite system are studied by the sessile drop technique that enables the spreading and infiltration dynamics to be monitored in situ. The experiments are performed by varying the temperature, the type of graphite (porosity, grain size) and the vapour phase (inert gas or high vacuum). Further experiments are performed in order to quantify the influence of the exothermic reaction between Si and graphite on the temperature field close to the infiltration front. The effects of Si–graphite interactions on graphite mechanical integrity are also evidenced.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-009-3889-6