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

fYear

2010

fDate

21-25 Feb. 2010

Firstpage

87

Lastpage

92

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Thermal Measurement and Management Symposium, 2010. SEMI-THERM 2010. 26th Annual IEEE

Conference_Location

Santa Clara, CA

ISSN

1065-2221

Print_ISBN

978-1-4244-9458-3

Electronic_ISBN

1065-2221

Type

conf

DOI

10.1109/STHERM.2010.5444308

Filename

5444308