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  Referencia 10487
Título: El uso de espumas metálicas. Ejemplos prácticos y futuros desarrollos en el sector de la automoción
Título original: Use of metal foams. Practical examples and future developments in automotive sector
Autor: Andrea Rossi
Resumen: Strictly speaking, the term foam means a uniform dispersion of a gaseous phase in a liquid. In providing a rigorous definition of the word, we can say that it is a uniform dispersion of a gas within a metal matrix obtained by solidifying a liquid foam. Thus, it is a material that, again, strictly speaking, is obtained by solidifying a mass of material
composed of bubbles of molten metal. Often, in fact, it is commonly referred to as metal foam, relating to any metal containing a high percentage of cavities, regardless of how these cavities were obtained. More correctly we should distinguish between metal foams and sponges: the former contain closed cells, which means that the pores are
not interconnected but are separated by the walls of the different bubbles, whereas on the contrary the latter contain open cells, which means that all the pores are interconnected. Due to their different morphology, foams and sponges can be made
with different materials. As a result, foams and sponges have different physical and mechanical properties and very different fields of application. The metal foams commonly found on the market are made of aluminium, zinc and lead, although foams
made of magnesium, tin, brass, gold and in some cases steel can be obtained with current production processes. The percentage of porosity of a metal foam attainable is generally between 60 and 97%.
Idioma: Inglés     País: Italia     Año: 2011
Tipo: Artículo
Área: Materiales y Materias primas > Otros materiales
Subsectores de aplicación: · Maquinaria y bienes de equipo
· Automoción e industria auxiliar
Entidad: Musp
Fuente: ALUMINIUM AND ITS ALLOYS
Localización en fuente: Vol. 6, pp. 68-72
Descriptores: metal foams (espumas metálicas), molten metal (metal fundido), automotive sector (sector de la automoción)
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