Title :
Fabrication and characterization of carbon-aluminum thermal management composites
Author :
Jiang, N. ; Novak, J.P. ; Fink, R.L.
Author_Institution :
Appl. Nanotech, Inc., Austin, TX, USA
Abstract :
A carbon-based, aluminum composite material with low mass, high thermal conductivity and low coefficient of thermal expansion (CTE) has been developed and characterized in this study. The carbon-aluminum composite is fabricated by injecting molten aluminum into a porous graphitic carbon matrix using a high-pressure impregnation process. The CTE of the carbon-aluminum composite is 7 ppm/K, and the thermal conductivity is as high as 425 W/mK. The composite offers excellent thermal diffusivity, 2.5 - 3 times higher than that of Cu and Al, and a specific gravity less than that of Al.
Keywords :
carbon compounds; composite materials; graphite; thermal conductivity; thermal diffusivity; thermal expansion; thermal management (packaging); CAl; composite material; high-pressure impregnation process; molten aluminum injection; porous graphitic carbon matrix; thermal conductivity; thermal diffusivity; thermal expansion coefficient; thermal management composites; Aluminum; Composite materials; Conducting materials; Fabrication; Inorganic materials; Organic materials; Scanning electron microscopy; Temperature; Thermal conductivity; Thermal management; Thermal management material; carbon aluminum composite; high-pressure impregnation; low CTE;
Conference_Titel :
Semiconductor Thermal Measurement and Management Symposium, 2010. SEMI-THERM 2010. 26th Annual IEEE
Conference_Location :
Santa Clara, CA
Print_ISBN :
978-1-4244-9458-3
Electronic_ISBN :
1065-2221
DOI :
10.1109/STHERM.2010.5444308
