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Carbon reinforced metal composites with tailored thermophysical and damping properties

Kohlenstoffverstärkte Metallmatrix-Verbundwerkstoffe mit maßgeschneiderten thermophysikalischen und Dämpfungseigenschaften
: Weissgaerber, T.; Hutsch, T.; Schubert, T.; Kieback, B.

Jesberger, T.J. ; Metal Powder Industries Federation -MPIF-, Princeton/N.J.:
Advances in powder metallurgy & particulate materials 2011. Vol.2: Parts 7-12 : Proceedings of the 2011 International Conference on Powder Metallurgy & Particulate Materials; May 18 - 21, San Francisco, CA; PowderMet 2011
Princeton/NJ, 2011
ISBN: 978-0-9819496-5-9
International Conference on Powder Metallurgy & Particulate Materials (PowderMet) <2011, San Francisco/Calif.>
Conference Paper
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()

Carbon, depending on its modifications such as diamond, graphite or carbon nanotubes/nanofibers, provides a good opportunity for the development of new MMCs (metal matrix composites) due to its interesting properties, including good electrical and thermal conductivity, high internal damping, good self-lubricating properties, and low density. According to the particular application, metal-carbon composites with their unique properties can be used in the areas of thermal management of electronic devices, tribology, and in equipment and mechanical engineering as a passive attenuator. Using graphite flakes powder metallurgical technologies can be used to manufacture composites with reinforcement contents up to 80vol.-%. Beside copper also other matrices were used, like tungsten, aluminium and iron. The thermo-physical properties as well as damping properties will be displayed and discussed in dependence from the manufacturing route and the composition. Additionally carbon nanotubes have been also used as reinforcement. Depending on the manufacturing technology the orientation of the tubes can be influenced and the resulting properties will be discussed as a function of microstructural parameters.