New Composite Materials, Obtained from Ashes Wastes, with Potential Applications for Electromagnetic Shielding

Wilhelm Kappel; Mirela Maria Codescu; Eugen Manta; Eros Alexandru Pătroi; Cristian Morari; Remus Erdei

doi:10.4028/www.scientific.net/MSF.672.245

Paper Titles

NdFeB/αFe Nanocomposite Permanent Magnets with Enhanced Properties Prepared by Spark Plasma Sintering
p.229

Preliminary Studies Regarding the Behaviour of New Titanium Implants
p.233

Research on the Way of Obtaining the Parts of Sintered Powders by Injection Moulding
p.237

Influence of the Reinforcing Elements on the Wear Behavior of Al/(Sic+Graphite) Composites Elaborated by Spark Plasma Sintering Technology
p.241

New Composite Materials, Obtained from Ashes Wastes, with Potential Applications for Electromagnetic Shielding
p.245

Physical and Quantitative Microstructural Analysis of Sintered Al-Cu/SiCp Composites
p.251

Modification of the Structural Characteristics of the Tungsten Powder through Short Mechanical Milling Processes
p.255

Research on the Elaboration by Sintering in Steps of Carbon Steels Based on Iron and Pure Synthetic Cementite Nanopowders Obtained by Mechanical Alloy
p.259

A Study on the Effect of Manufacturing Conditions on Surface Roughness during Machining of Cu/Al₂O₃ Composites
p.263

HomeMaterials Science ForumMaterials Science Forum Vol. 672New Composite Materials, Obtained from Ashes...

New Composite Materials, Obtained from Ashes Wastes, with Potential Applications for Electromagnetic Shielding

Abstract:

By an appropriate processing of the pyritic ashes (resulted as residue in the fabrication process of the sulphuric acid) can be valorised the metallic elements. The paper presents the magnetic characteristics of the powders before and after the thermal annealing, and also the flowability and the granulometric characteristics of these powders. Starting from a very low magnetization, σ = 3.65 emu/g, the Fe amount of the powders is dramatically increased, after an appropriate thermal treatment, to approx. 34 %, corresponding to σ=128 emu/g. The Fe-enriched powders, embedded in epoxy resin matrix, generate a composites material, which can be used as electromagnetic shields, based on their materials properties (permittivity, permeability and electrical conductivity) in the 1000 – 2500 MHz range.

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Periodical:

Materials Science Forum (Volume 672)

Pages:

245-250

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.672.245

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Online since:

January 2011

Authors:

Wilhelm Kappel, Mirela Maria Codescu, Eugen Manta, Eros Alexandru Pătroi, Cristian Morari, Remus Erdei

Keywords:

Ashes Waste, EM Shielding, Magnetic Material, Recovering

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