An original way to investigate the siliconizing of carbon materials

The reaction of liquid silicon with glassy carbon and polycrystalline graphite was investigated according to two siliconizing processes. In the first process, the reactants are progressively heated from room temperature up to 1600 °C. In the second one, the liquid silicon is poured onto the carbon sample once the reactants have reached the required temperature, in order to consider short reaction times. Thus, an original equipment consisting of a graphite reactor, has been specially designed for this purpose. The nature and the growth rate of the resulting silicon carbide has been studied using scanning electron microscopy. The results showed the formation of a thin continuous layer of SiC crystallites at the liquid silicon/carbon interface. The thickness of the layer shortly becomes independent of reaction time (about 10 µm on glassy carbon and 15 µm on polycrystalline graphite after 30 min reaction time) while some isolated SiC particles appear in the solidified silicon phase, as well as a regular and unusual time dependent SiC layer at the silicon melt/atmosphere interface

Sonocatalytic degradation of monolinuron in the presence of TiO2 as catalyst

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30 ans de suivi de la qualité physico-chimique et microbiologique de l’eau du Rhône en Savoie GRUTTEE

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Dynamique des échanges de polluants à l’interface Sol-Air. Etudes en Laboratoire et sur Sites pollués

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Soil-Air exchange of PAH from an old landfill, currently under rehabilitation

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Transfert sol - air de HAP au droit d’une ancienne décharge en cours de réhabilitation.

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Traces of degradation by pyrolysis under ultrasound : it’s getting hot in ionic liquids!

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