Nanocomposite coatings with highly-aligned graphite nanoplatelets in a copper matrix were successfully fabricated by electrodeposition. For the first time, the disposition and thermal conductivity of the nanofiller has been evaluated. The degree of alignment and inclination of the filling materials has been quantitatively evaluated by polarized micro-Raman spectroscopy. The room temperature values of the thermal conductivity were extracted for the graphite nanoplatelets by the dependence of the Raman G-peak frequency on the laser power excitation. Temperature dependency of the G-peak shift has been also measured. Most remarkable is the global thermal conductivity of 640 ± 20 W·m⁻¹·K⁻¹ (+57% of copper) obtained for the composite coating by the flash method. Our experimental results are accounted for by an effective medium approximation (EMA) model that considers the influence of filler geometry, orientation, and thermal conductivity inside a copper matrix.

Direct Numerical Simulation of an Open-Cell Metallic Foam through Lattice Boltzmann Method - Volume 18 Issue 3 - Daniele Chiappini, Gino Bella, Alessio Festuccia, Alessandro Simoncini

Manufacturing Review is a journal on developments and applications of manufacturing engineering, technology and applied sciences