Metals 2012, 2(1), 1-9; doi:10.3390/met2010001
Article

Method of Preventing Shrinkage of Aluminum Foam Using Carbonates

1,* email, 1email, 1email, 2email, 3,4email and 3email
Received: 23 September 2011; in revised form: 7 December 2011 / Accepted: 15 December 2011 / Published: 23 December 2011
(This article belongs to the Special Issue Metal Foams)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Metallic foams are commonly produced using titanium hydride as a foaming agent. Carbonates produce aluminum foam with a fine and homogenous cell structure. However, foams produced using carbonates show marked shrinkage, which is clearly different from those produced using titanium hydride. It is essential for practical applications to clarify foam shrinkage and establish a method of preventing it. In this research, cell structures were observed to study the shrinkage of aluminum foam produced using carbonates. The cells of foam produced using dolomite as a foaming agent connected to each other with maximum expansion. It was estimated that foaming gas was released through connected cells to the outside. It was assumed that cell formation at different sites is effective in preventing shrinkage induced by cell connection. The multiple additions of dolomite and magnesium carbonate, which have different decomposition temperatures, were applied. The foam in the case with multiple additions maintained a density of 0.66 up to 973 K, at which the foam produced using dolomite shrank. It was verified that the multiple additions of carbonates are effective in preventing shrinkage.
Keywords: aluminum foam; carbonates; shrinkage
PDF Full-text Download PDF Full-Text [3258 KB, uploaded 23 December 2011 14:05 CET]

Export to BibTeX |
EndNote


MDPI and ACS Style

Koizumi, T.; Kido, K.; Kita, K.; Mikado, K.; Gnyloskurenko, S.; Nakamura, T. Method of Preventing Shrinkage of Aluminum Foam Using Carbonates. Metals 2012, 2, 1-9.

AMA Style

Koizumi T, Kido K, Kita K, Mikado K, Gnyloskurenko S, Nakamura T. Method of Preventing Shrinkage of Aluminum Foam Using Carbonates. Metals. 2012; 2(1):1-9.

Chicago/Turabian Style

Koizumi, Takuya; Kido, Kota; Kita, Kazuhiko; Mikado, Koichi; Gnyloskurenko, Svyatoslav; Nakamura, Takashi. 2012. "Method of Preventing Shrinkage of Aluminum Foam Using Carbonates." Metals 2, no. 1: 1-9.

Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert