Low Temperature Metallic Foams

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Foroughi, Leila | 2015

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 47127 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Askari, Masoud
Abstract:
Metal foams are considered as a group of new materials and are applied widely in various areas due to their particular properties such as low density, high strength-to-weight ratio and appropriate mechanical, thermal, physical, electrical and magnetic properties. The aim of the present study is acquiring the technical knowledge of Zinc foam production by melting route and also optimizing the effective parameters on the foam stability. For this reason, 4 Zinc foams were produced at different times and temperatures. The amount of Calcium as the melt fluidity reducing agent and Titanium hydride and Zinc carbonate as the blowing agent were the same in all the specimens. The effect of heat treatment of Titanium hydride on the foam properties was also surveyed. Microstructure and morphology of Zinc foam cells were studied using LM and SEM. Pressure test was performed on the samples in order to investigate the mechanical properties and energy absorption of the produced foams. The results indicate a significant influence of foaming temperature and time and also the added elements on the mechanical properties of the foam
Keywords:
Zinc Carbonate ; Calcium ; Foam Stability ; Metal Foam ; Titanium Hydride ; Zinc Foam ; Melting Route ; Blowing Agent

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