Journals Information
Universal Journal of Materials Science Vol. 3(4), pp. 55 - 61
DOI: 10.13189/ujms.2015.030401
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Influence of Carbon Nanotubes Dispersion on Thermal Properties of Copper-Carbon Nanotubes (CNTs) Composite Materials
Guy-Marie Vallet 1,2,*, Michel Dunand 1, Jean-Francois Silvain 3
1 Labinal Power Systems, France
2 Institute of Condensed Matter Chemistry of Bordeaux (ICMCB), University of Bordeaux, France
3 Centre National De La Recherche Scientifique (CNRS), Institute of Condensed Matter Chemistry of Bordeaux (ICMCB), France
ABSTRACT
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掳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.
KEYWORDS
Composite Materials, Powder Metallurgy, Thermal Conductivity, Thermal Properties
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Guy-Marie Vallet , Michel Dunand , Jean-Francois Silvain , "Influence of Carbon Nanotubes Dispersion on Thermal Properties of Copper-Carbon Nanotubes (CNTs) Composite Materials," Universal Journal of Materials Science, Vol. 3, No. 4, pp. 55 - 61, 2015. DOI: 10.13189/ujms.2015.030401.
(b). APA Format:
Guy-Marie Vallet , Michel Dunand , Jean-Francois Silvain (2015). Influence of Carbon Nanotubes Dispersion on Thermal Properties of Copper-Carbon Nanotubes (CNTs) Composite Materials. Universal Journal of Materials Science, 3(4), 55 - 61. DOI: 10.13189/ujms.2015.030401.