Spray granulation of Fe and C nanoparticles and their impedance match for microwave absorption
Release Time:2019-03-12 Hits:
Indexed by: Journal Article
Date of Publication: 2018-03-01
Journal: JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Included Journals: Scopus、EI、SCIE
Volume: 34
Issue: 3
Page Number: 496-502
ISSN: 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.