Carbon foam: Preparation and application - …
01.06.2015· By the addition of 5 mass% graphite, compressive strength improved from 3.7 to 12.5 MPa and thermal conductivity from 70.2 to 107.4 W/m K. Addition of 4 vol% vapor-grown carbon fibers was very effective to improve crush strength of the foam, the fibers used being an averaged diameter of 78 nm, heat-treated at 3000 °C and chopped to 10 μm in length .