Spray granulation of Fe and C nanoparticles and their impedance match for microwave absorption. Issue 3 (March 2018)

• Record Type: Journal Article
• Authors: Huang, H.; Gao, Y.; Fang, C.F.; Wu, A.M.; Dong, X.L.; Kim, B.S.; Byun, J.H.; Zhang, G.F.; Zhou, D.Y.
• Is Part Of: Journal of materials science & technology. Volume 34:Issue 3(2018)
• Page Start: 496
• Page End: 502
• Publication Date: 2018-03
• Subjects: Dielectric loss -- Magnetic loss -- Spray granulation method -- Impedance match; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2017.01.010
• Languages: English
• ISSNs: 1005-0302

Abstract

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).