Electromagnetic properties of silver coated iron based alloy powders prepared by chemical reduction method

Byoung Yoon Lee, Jae Wook Lee, Yeo Chun Yun, In Bum Jeong, Jooho Moon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The synthesis of silver coated iron base alloy (Sendust : Fe-Si-Al) powder having the both effects of shielding and suppressing of electromagnetic wave was studied. Depending on thickness of silver coating layer, the electromagnetic properties of the dispersed particles complexed with organic binder were examined. EDS-SEM, XRD, ohm meter, network analyzer (PNA8364A) measurements were used to characterize the electromagnetic properties. The silver coated powders have a better microwave absorbance than non coated powder in the low frequency range of below 1.0GHz, which is due to a high dielectric constant and dielectric loss of the silver in microwave 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 electrical properties and thickness can be used as thin microwave absorbers in quasi-microwave frequency band.

Original languageEnglish
Title of host publicationProgress in Powder Metallurgy - Proceedings of the 2006 Powder Metallurgy World Congress and Exhibition (PM 2006)
PublisherTrans Tech Publications Ltd
Pages1449-1452
Number of pages4
EditionPART 2
ISBN (Print)0878494197, 9780878494194
DOIs
Publication statusPublished - 2007 Jan 1
Event2006 Powder Metallurgy World Congress and Exhibition, PM 2006 - Busan, Korea, Republic of
Duration: 2006 Sep 242006 Sep 28

Publication series

NameMaterials Science Forum
NumberPART 2
Volume534-536
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other2006 Powder Metallurgy World Congress and Exhibition, PM 2006
CountryKorea, Republic of
CityBusan
Period06/9/2406/9/28

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Lee, B. Y., Lee, J. W., Yun, Y. C., Jeong, I. B., & Moon, J. (2007). Electromagnetic properties of silver coated iron based alloy powders prepared by chemical reduction method. In Progress in Powder Metallurgy - Proceedings of the 2006 Powder Metallurgy World Congress and Exhibition (PM 2006) (PART 2 ed., pp. 1449-1452). (Materials Science Forum; Vol. 534-536, No. PART 2). Trans Tech Publications Ltd. https://doi.org/10.4028/0-87849-419-7.1449