AZINA, Clio; ROGER, Jerome; JOULAIN, Anne; MAUCHAMP, Vincent; MORTAIGNE, Bruno; LU, Yongfeng; SILVAIN, Jean-François

doi:10.1016/j.jallcom.2017.12.196

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AZINA, Clio
Department of Electrical Engineering
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

ROGER, Jerome
Laboratoire des Composites Thermostructuraux [LCTS]

JOULAIN, Anne
Physique des Défauts et de la Plasticité [Institut Pprime] [PDP]

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Article de revue

Ce document a été publié dans

Journal of Alloys and Compounds. 2018, vol. 738, p. 292-300

Elsevier

Résumé en anglais

Metal matrix composites are currently being investigated for thermal management applications. In the case of a copper/carbon (Cu/C) composite system, a particular issue is the lack of affinity between the Cu matrix and the C reinforcements. Titanium-alloyed Cu (Cu-Ti) powders were introduced in a Cu/C powder mixture and sintered under load at a temperature at which the Cu-Ti powders became liquid, while the rest of the Cu and C remained solid. Fully dense materials were obtained (porosity of less than 5%). The creation of regular and homogeneous interphases was confirmed. All Ti reacted with the carbon, hence purifying the Cu matrix. Thermal conductivities were enhanced as compared with the Cu/C composites without interphase. The chemical analyses are in agreement with thermodynamic simulations carried out to predict the phase transformation during the sintering process.< Réduire

Mots clés en anglais

CALPHAD

conduction

metal matrix composites

heat

solid-liquid co-existent phase process

DOI

http://dx.doi.org/10.1016/j.jallcom.2017.12.196

Project ANR

Interactions and transfers at fluids and solids interfaces - ANR-11-LABX-0017

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026