Abstract
Metal foams are a new class of materials with low densities and novel physical, mechanical, thermal, electrical, and acoustic properties. Aluminum foams especially show potential for use in lightweight structures, for energy absorption, and for thermal management. Open cell aluminum foams with tailored porous morphology were synthesized by a space-holder method. In these foams, the pore shape is predominantly controlled by the initial shape of the space-holder particles that are used to produce the preform. In this study, resin bonded sand and gypsum bonded ceramic space holder particles are used in the open cell foam production. This paper describes the space-holder method for manufacturing open cell aluminum foams and characterizes the density as well as the compressive property of the foams.
Kurzfassung
Produktion von zellularen Aluminiumschäumen mit Abstandspartikeln. Metallschäume stellen eine neue Klasse von Materialien mit geringer Dichte und neuen physikalischen, thermischen, elektrischen und akustischen Eigenschaften dar. Aluminiumschäume weisen insbesondere Potential hinsichtlich der Energieabsorption und des Temperaturmanagements bei ihrer Verwendung in Leichtbaustrukturen auf. Für die vorliegende Studie wurden Alumniumschäume mit offenen Zellen und einer zugeschnittenen porösen Morphologie mit einem speziellen Abstandshalterverfahren synthetisier. In solchen Schäumen wird die Porenform vor allem durch die Ausgangsform der Abstandspartikel bestimmt, die verwendet werden, um die Vorform zu produzieren. Im vorliegenden Beitrag wird das Abstandshalter-Verfahren zur Produktion der Aluminiumschäume mit offenen Zellen beschrieben und die Dichte sowie die Kompressionseigenschaften der Schäume charakterisiert.
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