In this work, the influence of the composition as well as the density and the porosity of the foaming precursors on the foaming efficiency, the microstructure development and the mechanical properties of aluminium foams are presented and discussed. Foams were prepared, starting from precursors made either by the powder metallurgy (PM) or by the melt route. Following the PM route, precursors were made by mixing Al powder and 3-10 vol. % of dolomite or calcium carbonate particles of various particle size (from 20 to 120 µm) and cold isostatically pressing of the obtained mixture at 700 MPa
COBISS.SI-ID: 14569238
Metal foams are advanced metal materials with a large porosity (up to 90 %) and possesses many appealing combinations of physical and mechanical properties, such as high stiffness in conjunction with very low specific weight, high impact energy absorption, flame and heat resistance, sound absorption, low electric conductivity and low thermal conductivity etc. Metal foams based on aluminium and aluminium alloys are usually used for aerospace and aeronautics industry, armoured vehicles, car industry and related areas, shipbuilding, civil engineering, biomedical industry and sporting equipment.
COBISS.SI-ID: 812970