Enhanced microwave absorption properties of flake-shaped FePCB metallic glass/graphene composites. (October 2016)

• Record Type: Journal Article
• Authors: Chuai, Dan; Liu, Xiaofang; Yu, Ronghai; Ye, Jinrui; Shi, Youqiang
• Is Part Of: Composites. Volume 89(2016)
• Page Start: 33
• Page End: 39
• Publication Date: 2016-10
• Subjects: A. Graphene -- A. Hybrid -- B. Electrical properties -- B. Magnetic properties; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2016.02.010
• Languages: English
• ISSNs: 1359-835X

Abstract

Abstract: A novel kind of composite absorber, i.e. FePCB/graphene composite, with excellent microwave absorption properties was successfully fabricated by a simple and scalable ball milling method. After being milled, the FePCB particles displayed flaky morphology with large aspect ratio. The complex permittivity and permeability of the flaky FePCB distinctly increased compared with those before milling. Furthermore, with the introduction of graphene, the flaky FePCB/graphene composite exhibited excellent microwave absorption performance with strong absorption and wide absorption band. In particular, for FePCB/graphene composite with an absorber thickness of 2 mm, the reflection loss (RL) reached a minimum of −45.3 dB at 12.6 GHz and the effective absorption bandwidth (RL < −10 dB) covered 5.4 GHz. The enhanced microwave absorption performance of the FePCB/graphene composite was attributed to the high magnetic loss and improved impedance matching which were closely related to the flake-shaped FePCB particles and the introduction of graphene sheets.