Electromagnetic interference shielding effectiveness of aluminum foams with different porosity

Xu, Zhengyang; Hai, Hong

doi:10.1016/j.jallcom.2014.07.188

Cited by 118 publications

(54 citation statements)

References 22 publications

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“…There are mainly two kinds of methods to improve the EMI SE properties [7][8][9][10]. The first is to improve the electrical conductivity of the materials.…”

Section: A N U S C R I P Tmentioning

confidence: 99%

Electromagnetic interference shielding effectiveness of magnesium alloy-fly ash composites

Wang

Meng

et al. 2015

Journal of Alloys and Compounds

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“…There are mainly two kinds of methods to improve the EMI SE properties [7][8][9][10]. The first is to improve the electrical conductivity of the materials.…”

Section: A N U S C R I P Tmentioning

confidence: 99%

Electromagnetic interference shielding effectiveness of magnesium alloy-fly ash composites

Wang

Meng

et al. 2015

Journal of Alloys and Compounds

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“…[1][2][3][4][5][6] These excellent properties allow aluminum foams to be used in many application fields. [7][8][9] Among various manufacturing methods, melt foaming method is one of the most widely used one.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Aluminum Foams with Small Pore Size by Melt Foaming Method

Cheng

Chen

et al. 2017

Metall Mater Trans B

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This article introduces an improvement to the fabrication of aluminum foams with small pore size by melt foaming method. Before added to the melt, the foaming agent (titanium hydride) was pretreated in two steps. It firstly went through the traditional pre-oxidation treatment, which delayed the decomposition of titanium hydride and made sure the dispersion stage was controllable. Then such pre-oxidized titanium hydride powder was mixed with copper powder in a planetary ball mill. This treatment can not only increase the number of foaming agent particles and make them easier to disperse in the melt, which helps to increase the number of pores, but also reduce the amount of hydrogen released in the foaming stage. Therefore, the pore size could be decreased. Using such a ball-milled foaming agent in melt foaming method, aluminum foams with small pore size (average size of 1.6 mm) were successfully fabricated.

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“…Metallic foams possess several unique functional properties, such as high energy absorption [1], high strength-to-weight ratio [2], sound absorption [3], electromagnetic shielding [4], and a high specific surface area [5]. The processing routes of metallic foams can be classified into four main technologies: solid state processing [6], liquid state processing [7], electrodeposition and vapor deposition [8].…”

Section: Introductionmentioning

confidence: 99%

Melt Processing and Characterization of Al-SiC Nanocomposite, Al, and Mg Foam Materials

Nabawy

Khalil

Al-Ahmari

et al. 2016

Metals

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Abstract:In the present work, metallic foams of Al, Mg and an Al-SiC nanocomposite (MMNC) have been fabricated using a new manufacturing technique by employing melt infiltration assisted with an electromagnetic force. The aim of this investigation was to study and to develop a reliable manufacturing technique consisting of different types of metallic foams. In this technique, an electromagnetic force was used to assist the infiltration of Al-SiC slurry and of pure liquid metal into a leachable pattern of NaCl, thus providing perfect cellular structures with micro-sized porosities. A high frequency induction coil unit equipped with a vacuum chamber and a hydraulic press was used to manufacture the foam materials. Microstructures of the produced foam materials were explored by using Field Emission Scanning Electron Microscopy (FESEM). The mechanical behavior of the manufactured foams was investigated by applying compression testing. The results indicate a high applicability of the new technique in producing metallic foams of pure metals and of a metal matrix nanocomposite . The produced foam materials displayed isotropic cellular structures with excellent compressive behaviors. Microstructure measurements indicate that the average pore size and strut thickness that can be achieved are in the ranges of 100-500 µm and 50-100 µm, respectively. The produced foam of the Al-SiC nanocomposite material provided the highest strength of 50 MPa prior to the densification stage, which equates to 25 times, and 10 times higher than the strength levels that were obtained by Al, and Mg foams, respectively.

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Electromagnetic interference shielding effectiveness of aluminum foams with different porosity

Cited by 118 publications

References 22 publications

Electromagnetic interference shielding effectiveness of magnesium alloy-fly ash composites

Electromagnetic interference shielding effectiveness of magnesium alloy-fly ash composites

Fabrication of Aluminum Foams with Small Pore Size by Melt Foaming Method

Melt Processing and Characterization of Al-SiC Nanocomposite, Al, and Mg Foam Materials

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