Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 51, Issue 25-26, Pages 6259-6267Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2007.11.062
Keywords
Aluminium foams; Thermal conductivity; Transient plane source method
Categories
Funding
- CICYT [MAT 2002-04505-C02-01, MAT 2003-0697, MAT 2006-11614-C03-01]
- FEDER
- Spanish Ministry of Science and Education [Ref-AP-2004-2908]
Ask authors/readers for more resources
The thermal conductivity of a collection of AlSi7 foams with porosities between 0.5 and 0.8 produced throughout the powder metallurgical route has been determined using the transient plane source technique (TPS). Several measurements have been performed on different surfaces of the foam blocks. The values obtained have shown an increase of effective thermal conductivity with density and a significant dependency with the zone of the foam where the experiments were performed. The results obtained have been explained in terms of local density trough images obtained from computed tomography, showing that the TPS technique is sensitive to in-homogeneities derived from the foaming process. Finally, several theoretical models for thermal conductivity have been unified, after suitable simplifications for this kind of materials, and have been compared with the experimental results. (C) 2008 Elsevier Ltd. All rights reserved,
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available