FeSiAl/metal core shell hybrid composite with high-performance electromagnetic interference shielding

Pradeep Sambyal, Seok Jin Noh, Jun Pyo Hong, Woo Nyon Kim, Aamir Iqbal, Seung Sang Hwang, Soon Man Hong, Chong Min Koo

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Herein, for the first time, FeSiAl (sendust)/metal hybrid materials were synthesized with a magnetic core and a highly electrically conductive metal shell for shielding electromagnetic interference (EMI) pollution. Soft magnetic sendust flakes were electroless-plated with electrically conductive Ag or Ni metal to form Ag-plated and Ni-plated sendust core-shell hybrids. The magnetic and metal hybrid-incorporated paraffin wax composites exhibited a better absorption-dominant EMI shielding performance of 65.6 dB and 58.5 dB, respectively, than that of the sendust wax composite and the composite with a mixture of sendust and electrically conductive Ag/Cu dendrite. The superior shielding performance was attributed to the synergistic combination of the effective magnetic loss, dielectric loss, and conduction loss. These exceptional properties of the new hybrid composite showed that it could be used in absorption-dominant EMI shielding applications.

Original languageEnglish
Pages (from-to)66-73
Number of pages8
JournalComposites Science and Technology
Volume172
DOIs
Publication statusPublished - 2019 Mar 1

Bibliographical note

Funding Information:
This work was financially supported by a grant from the Basic Science Research Program ( 2017R1A2B3006469 ) through the National Research Foundation of Korea funded by the Ministry of Science, ICT and Future Planning , the Fundamental R&D Program ( 10077545 and 10067102 ) for the Core Technology of Materials, and the Industrial Strategic Technology Development Program funded by the Ministry of Knowledge Economy, Smart Civil Infrastructure Research Program (SCIP) ( 18SCIP-B146646-01 ) funded by Ministry of Land, Infrastructure and Transport, Republic of Korea . Partial funding was provided by the Materials Architecturing Research Center, Young Fellow , KU-KIST School Program of the Korea Institute of Science and Technology (KIST) and Korea University .

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

  • Core-shell
  • EMI shielding
  • Electrical conductivity
  • Electroless plating
  • Sendust

ASJC Scopus subject areas

  • Ceramics and Composites
  • General Engineering

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