The space holder process (SHP) is a useful and common technique to obtain metal foams. However, an important question remains unsolved: Would the quality of salt affect properties aluminum foam obtained? In this paper, removable preforms two types (refined unrefined) were infiltrated with A356 alloy foams different pore sizes. interaction preform-metal was studied from analyzing morphological s...

The Synthesis and Systematic Evaluation of Modified Polymeric Foams and Electrically Conductive Polyimide/Carbon/Metal Films by John Macharia Kinyanjui Dr. David W. Hatchett, Examination Chair Assistant Professor of Chemistry University of Nevada, Las Vegas Thermally processed PU foams are examined as a function of processing temperatures (25, 45, 65, and 85°C) at the side, middle, and center o...

Abstract. Metal foams are a relatively new class of materials with many interesting combinations physical and mechanical properties. Among them, the closed-cells aluminum most for structural applications in aerospace industry. There exist different methods to produce metal foams. An innovative manufacturing technique was developed this study, proving possibility through cold spray additive tech...

Due to their large surface-area-to-volume ratio and tortuous structure, metal foams hold promise for heat transfer applications. Both of these factors increase the heat transfer by enhancing the mixing and surface area. The main disadvantage associated with their thermal-hydraulic performance is relatively higher pressure drop, resulting in larger pumping power requirements if they are used in ...

Potential applications of metal foams include light weight cores for sandwich panels, shells and tubes where the foam can increase the resistance to local buckling, increase the impact resistance, and improve the energy absorbing capacity of the structure [1,2]. This latter property offers potential uses in transportation applications where, for example, foam-filling of the hollow sections of a...

Nanoporous iron metal foams were synthesized by an improved sol-gel autocombustion method in this report. It has been confirmed to be pure phase iron by X-ray diffraction measurements. The nanoporous characteristics were illustrated through scanning electron microscope and transmission electron microscope images. Very low density and quite large saturation magnetization has been performed in th...