Production of Al foams using the SDP method: processing parameters and introduction a new sintering device

  • Javier Cadena Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
  • Ignacio Figueroa Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
  • Miguel Suarez Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
  • Omar Novelo Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
  • Gonzalo González Permanent address: Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México. Laboratoire Procédés et Ingénierie Mécanique et Matériaux ENSAM, 151, bd de Hôpital 75013, Paris, France.
  • Gabriel Lara Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
  • Ismeli alfonso Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.

Abstract


The processing of aluminum (Al) foams with maximum porosity of ~ 70%, regular pore size and interconnected pores were successfully produced by means of the powder metallurgy method of Sintering Dissolution Process (SDP). The metal powder used for the present study was Al powder with 99.5 % of purity and diameters between 75 µm and 200 µm. The chosen Space Holder Particles (SHP) were spherical carbamide CH4N2O particles with diameters ranging from to 1 to 2 mm. The optimum sinterization temperature was found at 620 ºC, at this temperature, a number of necks between Al particles surfaces were observed; indicating a good cohesion between Al particles, while keeping the porous structure of the green compact. The level of porosity was dependent of the carbamide content and the voids formed within the Al particles after the sinterization process. The sample with 60 wt.% of carbamide showed the lowest yield stress value than those for the samples with 40 and 50 wt.%. The strain values significantly increased when the carbamide content increased from 40 to 60 wt.%. Finally, the results obtained from a new sintering device for producing metallic foams at temperatures below 900 °C are also discussed.

Author Biographies

Javier Cadena, Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
PhD student
Ignacio Figueroa, Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
Senior Lecturer in Metallurgy
Miguel Suarez, Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
PhD
Omar Novelo, Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
PhD
Gonzalo González, Permanent address: Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México. Laboratoire Procédés et Ingénierie Mécanique et Matériaux ENSAM, 151, bd de Hôpital 75013, Paris, France.
PhD
Gabriel Lara, Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
PhD
Ismeli alfonso, Universidad Nacional Autónoma de México, Instituto de Investigaciones en Materiales, México D.F. C. P. 04510, México.
PdD

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Published
2016/04/28
How to Cite
Cadena, J., Figueroa, I., Suarez, M., Novelo, O., González, G., Lara, G., & alfonso, I. (2015). Production of Al foams using the SDP method: processing parameters and introduction a new sintering device. Journal of Mining and Metallurgy, Section B: Metallurgy, 52(1), 47-52. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/6642
Issue
Vol. 52 No. 1 (2016)
Section
Original Scientific Paper

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