ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The synthesis of silver coated iron base alloy (Sendust : Fe-Si-Al) powder having theboth effects of shielding and suppressing of electromagnetic wave was studied. Depending onthickness of silver coating layer, the electromagnetic properties of the dispersed particlescomplexed with organic binder were examined. EDS-SEM, XRD, ohm meter, network analyzer(PNA8364A) measurements were used to characterize the electromagnetic properties. The silvercoated powders have a better microwave absorbance than non coated powder in the low frequencyrange of below 1.0GHz, which is due to a high dielectric constant and dielectric loss of the silver inmicrowave frequencies magnetic loss in addition to conduction loss. Reflection loss of the 5%silver containing composite was found to be –6 dB at 1.0GHz with 1.0mm thickness. It is, therefore,successfully proposed that the silver coated sendust flake powders with controlled electricalproperties and thickness can be used as thin microwave absorbers in quasi-microwave frequencyband
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1449.pdf
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