Development of Multi-Layer Zinc Oxide-Iron Composite Coatings for Microwave Absorption

2014 ◽  
Vol 20 (7) ◽  
pp. 1490-1494 ◽  
Author(s):  
M. Najim ◽  
P. Smitha ◽  
V. Agarwala ◽  
D. Singh
Keyword(s):  
Zinc Oxide ◽  
Microwave Absorption ◽  
Composite Coatings

Synthesis, Characterization, and Microwave Absorption Properties of SrFe12O19 Ferrites and FeNi3 Nanoplatelets Composites

2010 ◽  
Vol 148-149 ◽  
pp. 893-896 ◽  
Author(s):  
Ze Yang Zhang ◽  
Xiang Xuan Liu ◽  
You Peng Wu
Keyword(s):  
Electron Microscopy ◽  
Microwave Absorption ◽  
Composite Coatings ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Absorption Properties ◽  
Filling Fraction ◽  
Microwave Absorption Properties ◽  
Phase Reduction ◽  
Transmission Electron

M-typical SrFe12O19 ferrites and FeNi3 nanoplatelets were successfully prepared by the sol-gel method and solution phase reduction method, respectively. The crystalline and morphology of particles were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). The composite coatings with SrFe12O19 ferrites and FeNi3 nanoplatelets in polyvinylchloride matrix were prepared. The microwave absorption properties of these coatings were investigated in 2-18GHz frequency range. The results showed that the M-typical SrFe12O19 ferrites and FeNi3 nanoplatelets were obtained and they presented irregular sheet shapes. With the increase of the coating thickness, the absorbing peak value moves to the lower frequency. The absorbing peak values of the wave increase along with the increasing of the content of FeNi3 nanoplatelets filling fraction. When 40% SrFe12O19 ferrites is doped with 20% mass fraction FeNi3 nanoplatelets to prepare composite with 1.5mm thickness, the maximum reflection loss is -24.8 dB at 7.9GHz and the -10 dB bandwidth reaches 3.2GHz.

scholarly journals A Review on Some Effects of the Electrolytic Deposited Zinc Oxide Multilayered Composite Coatings on Mild Steel

2019 ◽  
Vol 1378 ◽  
pp. 042052
Author(s):  
O. P Abioye ◽  
G. P Gaiya ◽  
O. S. I Fayomi ◽  
C. A Loto ◽  
A. J Musa
Keyword(s):  
Zinc Oxide ◽  
Mild Steel ◽  
Composite Coatings ◽  
Multilayered Composite

Microwave absorption properties of flexible zinc oxide sheet

2019 ◽  
Author(s):  
Nees Paul ◽  
Janet Jimmy ◽  
Sreedevi P. Chakyar ◽  
Sikha K. Simon ◽  
Joe Kizhakooden ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Microwave Absorption ◽  
Absorption Properties ◽  
Microwave Absorption Properties

scholarly journals Transparent Conductive Three-Layered Composite Films Based on Carbon Nanotubes with Improved Mechanical Stability

2014 ◽  
Vol 1659 ◽  
pp. 213-218
Author(s):  
Hans-Christoph Schwarz ◽  
Andreas M. Schneider ◽  
Stephen Klimke ◽  
Bibin T. Anto ◽  
Stefanie Eiden ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Graphene Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Mechanical Stability ◽  
Composite Coatings ◽  
Layered Composite ◽  
Conducting Layer ◽  
Oxide Nanoparticles ◽  
Transparent Conductor ◽  
Single Wall Nanotubes

ABSTRACTA layered composite coating material with favorable properties for application as a transparent conductor is presented. It is composed of layers of three nanoscopic materials, namely zinc oxide nanoparticles, single wall nanotubes, and graphene oxide nanosheets. The electrically conducting layer consists of single wall nanotubes (SWNTs). The layer of zinc oxide nanoparticles acts as a primer. It increases the adhesion and the stability of the films against mechanical stresses. The top layer of graphene oxide enhances the conductivity of such coatings. Such three-layer composite coatings show better conductivity (without compromising transparency) and improved mechanical stability compared to pure SWNT films. The processes used in the preparation of such coatings are easily scalable.

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