CONSTANTIN, L.; FAN, L.; ZOU, Q.; THOMAS, B.; ROGER, Jerome; HEINTZ, J.-M.; DEBIEMME-CHOUVY, C.; MORTAINGE, B.; LU, Y. F.; SILVAIN, J.F.

doi:10.1016/j.carbon.2019.11.032

CONSTANTIN, L.
Laboratoire des Composites Thermostructuraux [LCTS]

FAN, L.

ZOU, Q.

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Article de revue

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Carbon. 2020, vol. 158, p. 607-614

Résumé en anglais

The lack of robust interphases between carbon and most metals prevent the exploration of the full scope potential of carbon-based metal matrix composites. Here, we demonstrated a scalable and straightforward way to produce strong interphase between copper (Cu) and carbon fibers (CFs) by designing a tailored titanium oxide-carbide coating (TiOy-TiCx) on CFs in a molten salt process. The oxide-carbide composition in the graded layer strongly depends on the coating temperature (800-950 ºC). A coating with a high TiOy content obtained at a low coating temperature (800 ºC) contributes to better molten-Cu wetting and strong adhesion energy between CFs and Cu during a subsequent exposure at 1200 ºC. The Cu wetting angle for the TiOy-TiCx-CF sample obtained at 800 ºC was ~80º ± 5º with a Cu surface coverage of ~50% versus ~115º and ~10% for the TiCx-CF sample made at 950 ºC. The kinetic analysis of the coating process step by step suggests a growth rate limited by the mass-transfer through the coated layer. This method provides a novel approach to improve the thermal conductivity of Cu/C composite for thermal management applications.< Réduire

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https://oskar-bordeaux.fr/handle/20.500.12278/112092

DOI

http://dx.doi.org/10.1016/j.carbon.2019.11.032

Unités de recherche

Laboratoire des Composites Thermo Structuraux (LCTS) - UMR 5801

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Design of tailored oxide-carbide coating on carbon fibers for a robust copper/carbon interphase

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Résumé en anglais

URI

DOI

Unités de recherche