@Article{PintoMachGomeReze:2017:InAsRa,
author = "Pinto, Simone de Souza and Machado, Jo{\~a}o Paulo Barros and
Gomes, Newton A. S. and Rezende, Mirabel Cerqueira",
affiliation = "{Universidade Federal de S{\~a}o Paulo (UNIFESP)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and {Universidade
Federal de S{\~a}o Paulo (UNIFESP)}",
title = "Influence of the aspect ratio of magnetic metallic additives on
the microwave absorbing performance",
journal = "Materials Research Express",
year = "2017",
volume = "4",
number = "9",
pages = "096101",
month = "Sept.",
keywords = "microwave absorber, carbonyl iron, carbon-steel filaments, RAM.",
abstract = "This work aims to show the behavior of radar absorbing materials
(RAM) based on magnetic metallic additives with different aspect
ratios. For this, two materials, carbonyl iron, constituted of
spherical iron particles, and carbon-steel filaments were used.
These additives were characterized considering their morphological
and structural features. X-ray diffraction analysis shows that the
two additives have the same crystallographic structure, but their
morphologies are quite different in micrometer scale. Epoxy
resin/metallic additive composites using the neat additives and
their mixtures were prepared. The electromagnetic characterization
of the composites evaluated the permittivity, permeability and
reflectivity behaviors in the frequency range of 8.2-12.4 GHz. The
results show that the samples obtained with the mixture of the two
additives resulted in composites with high complex parameters of
permittivity and permeability. Better RAM performance is observed
for samples based on metallic filaments and for more concentrated
mixtures containing the two additives (values up to -14 dB or
similar to 96% of attenuation). The influence of
specimen-thickness on the RAM performance is also observed.",
doi = "10.1088/2053-1591/aa8516",
url = "http://dx.doi.org/10.1088/2053-1591/aa8516",
issn = "2053-1591",
language = "en",
targetfile = "pinto_influence.pdf",
urlaccessdate = "27 abr. 2024"
}