Hits:

Indexed by:期刊论文

Date of Publication:2018-03-01

Journal:JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY

Included Journals:SCIE、EI、Scopus

Volume:34

Issue:3

Page Number:496-502

ISSN No.:1005-0302

Key Words:Dielectric loss; Magnetic loss; Spray granulation method; Impedance match

Abstract:The microwave absorbents of Fe and C nanoparticles as magnetic loss and dielectric loss material respectively were composited with the polyvinyl alcohol (PVA) as binder by spray granulation method. The electromagnetic parameters of Fe and C composite particles were analyzed by vector network. The complex permittivity and magnetic permeability of Fe and C composite particles matched well with increasing C nanoparticle content, and then the microwave loss property was improved. A minimum reflection loss (RL) of 42.7 dB at 3.68 GHz for a composite with 4.6 mm in thickness can be obtained when the content ratio of the C nanoparticles, the modified Fe nanoparticles and the PVA is 21:49:30 (Sample 3). (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.