Manufacture of Aluminum Foam without Thickening Agent via Melt Foaming Method and its Compressive Behavior

Abstract:

This paper reported the fabrication of cellular Al foams without thickening agent addition via melt foaming method with the porosity rage of 62.4%-83.3% and the pore size of approximate 2.0mm. CaCO₃ was selected as the blowing agent. 1.0wt.%-3.0wt.% Mg was added in the matrix. The gas releasing reaction mechanism was revealed by TG-DTA (Thermo Gravimetric Analysis-Differential Thermal Analysis) experiments. The influence of the adding methods of Mg and CaCO₃ on the foaming process was studied and the results showed that, compared to adding powder mixture, the method of adding Mg bulk into the melt before the addition of CaCO₃ produces Al foams with better pore structure. Finally, the compressive behaviors of Al foams were investigated.

• Periodical: Materials Science Forum (Volume 817)
• Pages: 504-509
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.817.504
• Online since: April 2015
• Authors: Zhong Yun Hu*, Dong Hui Yang, Wei Ping Chen, Jian Qing Chen, Hui Wang, Jing Hua Jiang, Aibin Ma
• Keywords: Al Foam, Compressive Behavior, Melt Thickening, Melting Foaming

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