Advantages of the Use of Metal Foams for Electromagnetic Shielding

J. Íñiguez; V. Raposo; Ana  García Flores; M. Zazo; Pablo Hernández-Gómez

doi:10.4028/www.scientific.net/KEM.543.125

Paper Titles

Selective Hydrogen Detection in a Highly Contaminated Background Using only a Single Generic Metal Oxide Gas Sensor
p.109

Environmental UV-A Level Monitoring Using an Ag-TiO₂ Schottky Diode
p.113

High Temperature Dielectric, Elastic and Piezoelectric Coefficients of Shear Type Lithium Niobate Crystals
p.117

Gas Sensing Performance of Macroporous SnO₂ Thin Film Prepared by Using Carbonaceous Polysaccharide Microspheres as Pore-Forming Agent
p.121

Advantages of the Use of Metal Foams for Electromagnetic Shielding
p.125

Analyzing the Response of a Temperature Modulated Tin-Oxide Gas Sensor Using Local Linear Neuro-Fuzzy Model for Gas Detection
p.129

Intelligent Metal Detector
p.133

Synthesis and Kinetic of Palladium Nanotube Using Polymer Compound
p.137

Photocatalytic Characteristics of Titania Thin Film Prepared by Micro Arc Oxidation
p.141

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Advantages of the Use of Metal Foams for Electromagnetic Shielding

Abstract:

Metal foams are very interesting materials in new emerging technologies as aeronautic, spatial research, auto-motion or heat exchanger, but there are other areas in which these materials could be advantageous. Here is a new proposal for using these materials in electromagnetic shielding. The goal is to demonstrate that, although having a smaller effective electrical conductivity than massive materials, it is possible to attain operative electromagnetic shielding with a reduction of mass and, in addition, to bring together in a single product a supplementary protection against vibrations, impact, noise, etc., as corresponds to the well-known properties of porous materials. In terms of the operating frequency, conductivity and thickness of the metallic foams the electromagnetic screening was calculated. It is shown how to guarantee a specified shielding the necessary thickness in porous materials with respect to massive metals obeys to a quadratic relation.