Aluminum alloy foams are a form of porous metal whose structure resembles the shape of natural materials such as coral, bone, sponge, etc. Due to their structure, these materials retain good mechanical properties of the base material while being significantly lighter than non-porous metal. Metal foams can be used as energy and vibration absorbers, heat exchangers, insulators, and filters. The main disadvantage of this type of material is its high production cost. To reduce production costs, aluminum alloy chips are used as base material. Foams are made of A360 and AA 7075 aluminum alloys. To produce a porous structure, CaCO3 is used as a foaming agent while Zn and CaO were added as stabilizing agents. The main goal of the paper was to investigate the difference in the shape of pores and relative density after foaming with different stabilizing agents.
Ali, H., Gábora, A., Naeem, M. A., Kalácska, G., & Mankovits, T. (2021). Effect of the manufacturing parameters on the pore size and porosity of closed-cell hybrid aluminum foams. International Review of Applied Sciences and Engineering, 12(3), 230–237. https://doi.org/https://doi.org/10.1556/1848.2021.00262
An, J., Chen, C., & Zhang, M. (2021). Effect of CaCO3 content change on the production of closed-cell aluminum foam by selective laser melting. Optics & Laser Technology, 141, 107097. https://doi.org/https://doi.org/10.1016/j.optlastec.2021.107097
Ashby, M. F., Evans, A., Fleck, N. A., Gibson, L. J., Hutchinson, J. W., & Wadley, H. N. G. (2002). Metal foams: a design guide. Materials & Design, 23(1), 119. https://doi.org/https://doi.org/10.1016/S0261-3069(01)00049-8
Bisht, A., & Gangil, B. (2018). Structural and physico-mechanical characterization of closed-cell aluminum foams with different zinc additions. Science and Engineering of Composite Materials, 25(4), 789–795. https://doi.org/https://doi.org/10.1515/secm-2016-0307
Farahani, M. R., Rezaei Ashtiani, H. R., & Elahi, S. H. (2022). Effect of Zinc Content on the Mechanical Properties of Closed-Cell Aluminum Foams. International Journal of Metalcasting, 16(2), 713–722. https://doi.org/10.1007/s40962-021-00635-2
Grgić, K., Lela, B., Jozić, S., & Krolo, J. (2022). Aluminium foams made of various aluminium alloys scrap and various foaming agents. In Proc. of 11th Int. Conf. Mechanical Technology and Structural Materials, ed. S. Jozić, B. Lela and N. Gjeldum (Issue 11). Croatian society for mechanical technologies.
Karuppasamy, R., & Barik, D. (2021). Production methods of aluminium foam: A brief review. Materials Today: Proceedings, 37, 1584–1587. https://doi.org/https://doi.org/10.1016/j.matpr.2020.07.161
Kevorkijan, V., Skapin, S. D., Paulin, I., Sustarsic, B., & Jenkom, M. (2010). Synthesis and characterisation of closed cells aluminium foams containing dolomite powder as foaming agent. In Materials and Technologies (Vol. 6, Issue 44, pp. 363–371).
Kumar, G. S. V., García-Moreno, F., Banhart, J., & Kennedy, A. (2015). The stabilising effect of oxides in foamed aluminium alloy scrap. International Journal of Materials Research, 106(9), 978–987. https://doi.org/10.3139/146.111255
Movahedi, N., & Mirbagheri, S. M. H. (2016). Comparison of the Energy Absorption of Closed-Cell Aluminum Foam Produced by Various Foaming Agents. Strength of Materials, 48(3), 444–449. https://doi.org/10.1007/s11223-016-9783-y
Papadopoulos, D. P., Omar, H., Stergioudi, F., Tsipas, S. A., & Michailidis, N. (2011). The use of dolomite as foaming agent and its effect on the microstructure of aluminium metal foams—Comparison to titanium hydride. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 382(1–3), 118–123. https://doi.org/https://doi.org/10.1016/j.colsurfa.2010.12.005
Prados Martín, E. (2022). Microstructural parameters affecting the compressive response of closed-cell aluminum foams. Mechanics of Advanced Materials and Structures, 29(18), 2639–2651. https://doi.org/https://doi.org/10.1080/15376494.2021.1872747
Praveen Kumar, T. N., Venkateswaran, S., & Seetharamu, S. (2015). Effect of Grain Size of Calcium Carbonate Foaming Agent on Physical Properties of Eutectic Al–Si Alloy Closed Cell Foam. Transactions of the Indian Institute of Metals, 68(S1), 109–112. https://doi.org/10.1007/s12666-015-0631-8
Sudharsan, N., Rajasekaran, T., & Vinod-Kumar, G. S. (n.d.). Optimizing the hot compaction parameters of Al-Mg-Cu foams processed through elemental powder route. IOP Conference Series: Materials Science and Engineering, 402, 012202. https://doi.org/10.1088/1757-899X/402/1/012202
Tsuda, S., Kobashi, M., & Kanetake, N. (2006). Producing Technology of Aluminum Foam from Machined Chip Waste. MATERIALS TRANSACTIONS, 47(9), 2125–2130. https://doi.org/https://doi.org/10.2320/matertrans.47.2125
Wang, H., Zhu, D. F., Hou, S., Yang, D. H., Nieh, T. G., & Lu, Z. P. (2020). Cellular structure and energy absorption of Al Cu alloy foams fabricated via a two-step foaming method. Materials & Design, 196, 109090. https://doi.org/10.1016/j.matdes.2020.109090
(N.d.). https://doi.org/https://doi.org/10.1016/j.optlastec.2021.107097
This research has been supported by The
Croatian Science Foundation through the
project ALURECSS (IP-2020-02-8284).
