Influence of Carbon Nanotubes Dispersion on Thermal Properties of Copper-Carbon Nanotubes (CNTs) Composite Materials - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Universal Journal of Materials Science Année : 2015

Influence of Carbon Nanotubes Dispersion on Thermal Properties of Copper-Carbon Nanotubes (CNTs) Composite Materials

Résumé

In this present work, two methods for dispersing carbon nanotubes into the copper matrix were tested: a Solid Route process where CNTs are simply mixed with the copper powder and a Liquid Route process where CNTs are dispersed in a copper salt solution and then mixed with the metallic copper powder. Powders are sintered by uni-axial hot pressing process under vacuum atmosphere at 650°C and thermal conductivities of composite materials were measured using the laser flash method. Results are compared with a theoretical model of Nan et al. which enables to predict the thermal conductivity of materials containing CNTs. Comparison of experimental and theoretical results tends to prove that CNTs are 2D-randomly dispersed in a plane perpendicular to the pressing direction during uni-axial hot pressing process. Moreover, an increase of +7% of the thermal conductivity is shown for the composite material containing 1 vol. % of CNTs into the copper matrix.

Domaines

Matériaux
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Origine : Publication financée par une institution

Dates et versions

hal-01225638 , version 1 (26-01-2021)

Identifiants

Citer

Guy-Marie Vallet, Michel Dunand, Jean-François Silvain. Influence of Carbon Nanotubes Dispersion on Thermal Properties of Copper-Carbon Nanotubes (CNTs) Composite Materials. Universal Journal of Materials Science, 2015, 3 (4), pp.55-61. ⟨10.13189/ujms.2015.030401⟩. ⟨hal-01225638⟩
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