Si-Co and Si-Zr alloys/C-material interfaces: Wetting versus Infiltration
Authors/Creators
- 1. National Research Council of Italy-Institute of Condensed Matter Chemistry and Technologies for Energy, Via De Marini 6, 16149 Genova, Italy
- 2. Foundry Research Institute, Zakopiańska 73 Str., 30-418 Krakow, Poland
- 3. Universidad de Alicante-Instituto Universitario de Materiales de Alicante, Apdo. 99, 03080 Alicante, Spain
Description
ORAL PRESENTATION
In the manufacture of competitive composite materials through reactive infiltration, a great controversy related on the controlling stage of the infiltration process still exists. This controversy is based on the real driven force controlling the infiltration, is it a governed by Darcy's law or by the chemical reaction? To clarify this open issue, a key contribution could be coming from
know-how on wetting characteristics, reactivity, surface properties and thermodynamics concerning the reacting phases. The works carried out jointly between N. Eustathopoulos and J. Narciso on different infiltrating systems, i.e. Ni-Si and Al-Si, in C-porous
based materials, confirmed that reactivity at the interfaces, is the real governing phenomenon.
To further support this conclusion, systematic investigations of wetting characteristics, reactivity, surface properties and thermodynamics concerning Si-Me/C-based substrate couples (Me = Co, Zr) have been carried out and the more relevant results obtained are reported and in this short paper.
The outcomes here presented are doubly profitable: to study reactive infiltration process per se and to make progress in materials design of SiC-based composites.
The results are collected in the framework of “SIC-WIN: Reactivity of SI-alloy/C-material system: Wetting vs Infiltration" Project, H2020-MCSA, POLONEZ-3 and some of them are here presented.
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