Influence of embedded-carbon nanotubes on the thermal properties of copper matrix nanocomposites processed by molecular-level mixing

• DOI: 10.1016/j.scriptamat.2010.09.039
• Publication Date: 2010-09-28T09:44:39Z
• Authors: Kyung Tae Kim; Jürgen Eckert; Gang Liu; Jin Man Park; Byung Kyu Lim; Soon Hyung Hong
• Keywords: 02 engineering and technology; 0210 nano-technology

The microstructure of carbon nanotube reinforced copper matrix (CNT/Cu) nanocomposites, processed by molecular-level mixing, exhibits CNTs homogeneously dispersed in the Cu matrix. Measured thermal conductivity of the fabricated CNT/Cu nanocomposites decreased as the CNT volume fraction increased from 5% to 10%. A low coefficient of thermal expansion (CTE) was obtained from the 10 vol.% CNT/Cu nanocomposite. These results indicate that embedded CNTs provide CNT/metal interfaces as thermal barriers but also stiffen the metal matrix composites.