Composition and Structural Design of Magnetic Alloy/Composites for High-Performance Microwave Absorption: A Review
Mengyu Zhou, Zhuohui Zhou, Hongfei Cheng
TL;DR
This review explores how magnetic alloys and composites can be designed to improve microwave absorption for stealth and pollution control.
Contribution
The paper systematically summarizes recent advances in magnetic metal-based microwave-absorbing materials with a focus on design and performance optimization.
Findings
Magnetic alloys' absorption properties depend on composition and structure.
Composite systems enhance impedance matching and loss mechanisms.
Metamaterial-based designs enable ultrawide bandwidth absorption.
Abstract
Magnetic metals are of considerable importance for stealth technology and electromagnetic pollution control. However, they suffer from inherent limitations, such as the Snoek limit and narrow absorption bandwidth, which restrict their applications in complex scenarios. To address these challenges, this review systematically summarizes the recent advances of magnetic metal-based microwave-absorbing materials (MAMs), focusing on four core directions: alloy design, composite engineering, structural regulation, and preparation technology. The intensity and frequency bands of absorption in alloys are dictated by the material’s composition as well as its structural attributes. Moreover, composite systems incorporating carbon materials, MXenes, oxides, ceramics, and conductive polymers are discussed, where the synergistic design of components optimizes impedance matching and loss mechanisms.…
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Taxonomy
TopicsElectromagnetic wave absorption materials · MXene and MAX Phase Materials · Metamaterials and Metasurfaces Applications