Composite and Nanocomposite Metal Foams

Duarte, Isabel; Ferreira, J.M.F.

doi:10.3390/ma9020079

Cited by 110 publications

(54 citation statements)

References 146 publications

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“…The foams developed in this work are characterized by the presence of in-situ formed ceramic particles (mainly TiC) at the grain boundaries that are responsible of the brittle component of the mechanical behavior[ 21 ]. A crack normal to the load direction appeared after the yield strength, as can be observed inFigure 4b, following what described in the literature[19].…”

mentioning

confidence: 57%

Ovalbumin as foaming agent for Ti6Al4V foams produced by gelcasting

Biasetto

Moraes

Colombo

et al. 2016

Journal of Alloys and Compounds

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mentioning

confidence: 57%

Ovalbumin as foaming agent for Ti6Al4V foams produced by gelcasting

Biasetto

Moraes

Colombo

et al. 2016

Journal of Alloys and Compounds

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“…A foam, which has a relevant structural homogeneity, will be characterized by a critical bucking load very similar to that of several cells of which the foam is constituted. Consequently, the mechanical compression behavior will be characterized by a very flat plateau region . Vice versa, if the foam has a certain structural inhomogeneity or low foaming ratio, the collapse regime will be characterized by a stress plateau having a certain slope …”

Section: Resultsmentioning

confidence: 99%

Experimental evaluation of the hydrothermal stability of a silicone/zeolite composite foam for solar adsorption heating and cooling application

Calabrese

Brancato

Frazzica

2019

J of Applied Polymer Sci

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This article evaluates the hydrothermal and mechanical stability of an adsorbent composite foam based on zeolite silicone for application in adsorption heat pump. The adsorption properties of the fresh composite adsorbents and their morphological features were already presented in previous papers. In the present work, hydrothermal aging of composite foams, at varying SAPO‐34 zeolite contents and under real operating conditions, was carried out in order to verify the stability of the synthetized material. This improvement of knowledge is a key point for the industrial application. This evaluation was successfully performed by means of adsorption measurements and compression test on aged samples, up to 1500 aging cycles. The adsorption properties of composite foams are effective and stable up to the maximum number of cycles of the aging process. Instead, from the mechanical point of view, composite foams with high content of zeolite, aged at long cycles, evidenced a slight stiffening that stimulates mechanical brittle behavior. The composite foam with 67% zeolite filler represents a threshold value beyond which the action of the hydrothermal aging implies a significant loss of flexibility and mechanical integrity, which limits its applicability under typical conditions. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48311.

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“…[9] Alternative processing methods use powder sintering, where fine metal powders are compacted with a metal hydride and heat-treated near the melting temperature of the metal. [44] It is important to note that these foaming techniques form mm sized pores and are thus generally limited to macroscale porosity (Figure 2a). [9] One approach to enhance the properties of metal foams includes careful selection of the base metal alloy to produce strengthening intermetallics.…”

Section: Fabrication Of Macro-foams To Nanoporous Materials: Basic Comentioning

confidence: 99%

Nanoporous Metals with Structural Hierarchy: A Review

et al. 2017

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Nanoporous (np) metals have generated much interest since they combine several desirable material characteristics, such as high surface area, mechanical size effects, and high conductivity. Most of the research has been focused on np Au due to its relatively straightforward synthesis, chemical stability, and many promising applications in the fields of catalysis and actuation. Other materials, such as np-Cu, Ag, and Pd have also been studied. This review discusses recent advances in the field of np metals, focusing on new research areas that implement and leverage structural hierarchy while using np metals as their base structural constituents. First, we focus on single-element porous metals that are made of np metals at the fundamental level, but synthesized with additional levels of porosity. Second, we discuss the fabrication of composite structures, which use auxiliary materials to enhance the properties of np metals. Important applications of these hierarchical materials, especially in the fields of catalysis and electrochemistry, are also reviewed. Finally, we conclude with a discussion about future opportunities for the advancement and application of np metals.

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Composite and Nanocomposite Metal Foams

Cited by 110 publications

References 146 publications

Ovalbumin as foaming agent for Ti6Al4V foams produced by gelcasting

Ovalbumin as foaming agent for Ti6Al4V foams produced by gelcasting

Experimental evaluation of the hydrothermal stability of a silicone/zeolite composite foam for solar adsorption heating and cooling application

Nanoporous Metals with Structural Hierarchy: A Review

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