Skip to main content

Structural Characterization of Aluminum Foams Obtained by Powder Metallurgy

  • C. A. León-Patiño (a1), M. A. Monje-García (a1), E. A. Aguilar-Reyes (a1) and E. Bedolla-Becerril (a1)

The porous structure of aluminum foams was quantitatively monitored in terms of pore density, pore area, and shape and size distribution using image analysis; then, related to density and expansion profiles by interrupted experiments. This practice offers important information in the control and reproducibility of foams. The aluminum foams were produced by the powder compact melting method at 800°C. The foamable precursors consisted in uniaxial cold pressed Al-TiH2 mixtures compacted at 387 MPa; the pressure applied and particle size distribution of the mixture originated preforms with 95.9% densification. This procedure eliminated the traditional hot-compaction step; besides, the amount of foaming agent was kept to a minimum of 0.5 wt.% TiH2. A volume expansion of 215 to 236% and densities from 0.7730 to 0.8206 g/cm3were obtained in a time window of 420 to 570 s. The calculated shape factors and Feret diameters defined how the roundness of pores varies with size all along the foaming process.

Hide All
1. Banhart J., Progress in Mat. Sci. 46, 559 (2001).
2. Babcsán N., Leitlmeier D. and Degischer H. P., Mat.-wiss.u. Werkstofftech. 34, 22 (2003).
3. Baumeister J., Banhart J. and Weber M., Mat. & Design 18, 217 (1997).
4. Yu Chin-Jye, Eifert H. H., Banhart J. and Baumeister J., Mat. Res. Innovat. 2, 181 (1998).
5. Tzeng Sheng-Chung and Ma Wei-Ping, Int. J. Adv. Manuf. Technol. 32, 473 (2007).
6. Proa-Flores P. M. and Drew R. A. L., in Porous Metals and Metallic Foams, edited by Lefebvre L. P., Banhart J. and Dunand D. (DEStech Pub. Inc., Lancaster, USA 2008), p. 55.
7. Ozan S., Taskin M., Kolukisa S. and Ozerdem M., Int. J. Adv. Manuf. Technol. 39, 251 (2008).
8. Song Zhen-Lun, Ma Li-Qun, Wu Zhao-Jin and He De-Ping, J. Mat. Sci. 35, 15 (2000).
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *


Full text views

Total number of HTML views: 0
Total number of PDF views: 2 *
Loading metrics...

Abstract views

Total abstract views: 60 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 20th March 2018. This data will be updated every 24 hours.