Simultaneous achievement of high electromagnetic shielding effectiveness (X-band) and strength in Mg-Li-Zn-Gd/MWCNTs composite

Wang, Jiahao; Xu, Lin; Wu, Ruizhi; An, Di; Wei, Zhen; Wang, Jiaxiu; Feng, Jing; Zhang, Jinghuai; Hou, Linrui; Liu, Meiduo

doi:10.1016/j.jallcom.2021.160524

Cited by 24 publications

(5 citation statements)

References 65 publications

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“…In this instance, heat treatment also reduced EMI, although heating was still a factor in these operations. [ 120 ] Investigations were carried into the microstructure, EMI, SE, and mechanical characteristics of Mg – Zn – Y – Zr alloys with Y contents ranging from 0.01 to 3.91 weight percent. The casting ingots were hot extruded at 390 °C with an extrusion ratio of 11.5:1 after being homogenized for 20 h at 400 °C.…”

Section: Methodologies Used For Enhancing Emi Sementioning

confidence: 99%

“…Countries like Germany, Japan, the US, New Zealand, Poland, and China are in this race. [ 30,62,64,120,140 ]…”

Section: Why Mg–li Alloys As Electromagnetic Shielding Material?mentioning

confidence: 99%

“…The microstructure, electrical conductivity, electromagnetic shielding properties in the X‐band, and strength were evaluated. [ 120 ] A few studies [ 123 ] suggest that shielding materials with laminated structures have improved shielding properties at higher incoming electromagnetic frequencies. A summary of the properties of Mg–Li alloys showing SE is represented in Table 9 .…”

Section: Why Mg–li Alloys As Electromagnetic Shielding Material?mentioning

confidence: 99%

“…Countries like Germany, Japan, the US, New Zealand, Poland, and China are in this race. [30,62,64,120,140] Magnesium and lithium may be alloyed to create metallic materials with a phenomenally low density, almost on par with engineering plastics. The Mg-Li system is, therefore, both theoretically and practically interesting.…”

Section: Why Mg-li Alloys As Electromagnetic Shielding Material?mentioning

confidence: 99%

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Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Ashraf,

Guo,

et al. 2023

Adv Eng Mater

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Magnesium‐alloy (Mg‐alloy) materials have attracted considerable attention recently due to their potential applications in electromagnetic interference (EMI) shielding. EMI shielding is a technique to prevent unwanted electromagnetic fields from interfering with the regular operation of electronic devices and systems. EMI shielding is essential for electronics, communication, computers, aerospace, and defence, where high performance and reliability are required. A material’s EMI shielding effectiveness (SE) depends on several factors: its conductivity, magnetic permeability, reflectivity, absorption, and multiple scattering. Mg‐alloys have several advantages over other conventional shielding materials, such as Al‐alloys. These alloys have a lower density, higher specific strength and stiffness, and a higher damping capacity. Mg‐alloys also have high conductivity and magnetic permeability, which can enhance the SE of the material. Moreover, through various methods, such as alloying, heat treatment, surface treatment, and composite fabrication, Mg alloys can be modified to improve their SE and other properties. This review summarizes the recent progress and challenges in developing Mg‐alloy materials for EMI shielding applications. We discuss the effects of different factors on Mg‐alloys’ SE, such as composition, microstructure, frequency, and thickness. Also, we discuss the importance of Mg‐Li alloys and why they are better electromagnetic shielding materials than conventional Mg alloys. Finally, we provide some perspectives and suggestions for future research directions.This article is protected by copyright. All rights reserved.

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Section: Methodologies Used For Enhancing Emi Sementioning

confidence: 99%

“…Countries like Germany, Japan, the US, New Zealand, Poland, and China are in this race. [ 30,62,64,120,140 ]…”

Section: Why Mg–li Alloys As Electromagnetic Shielding Material?mentioning

confidence: 99%

Section: Why Mg–li Alloys As Electromagnetic Shielding Material?mentioning

confidence: 99%

Section: Why Mg-li Alloys As Electromagnetic Shielding Material?mentioning

confidence: 99%

See 2 more Smart Citations

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Ashraf,

Guo,

et al. 2023

Adv Eng Mater

Self Cite

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“…The resistivity increased with the amount of alloying elements in solid solution [21]. Conductivity depended on exonuclear electrons, the solute atoms dissolving in the matrix would cause serious lattice distortion and become the center, which scattering electrons and phonon, as a straightforward understanding, changing the direction of motion of electrons and phonon [22]. Under the synergistic action of warm rolling process and large deformation, the secondary phase precipitated dynamically and grew up.…”

Section: Electrical Conductivitymentioning

confidence: 99%

Microstructures and electromagnetic interference shielding effectiveness of ME21/Mg laminated materials by accumulative roll bonding

Zhang

Zhao

et al. 2021

Mater. Res. Express

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Laminated composite with multi-layer interfaces has better electromagnetic interference shielding performance, which has attracted great attention. In this work, magnesium matrix laminated structure materials were prepared through Accumulative Roll Bonding (ARB). Microstructure, electrical conductivity and electromagnetic interference (EMI) shielding effectiveness (SE) of ME21/Mg laminated materials were investigated to understand the effect of layered structure and the change of microstructure on the electromagnetic shielding property. The results showed: the precipitated secondary phase and introduced interfaces could provide multiple reflections, attenuate the electromagnetic waves and improve the SE value. The electrical conductivity of 2-cycle increased to 21.04*106S/m，which was 17.74% higher than that of ME21 alloy, the intensity of texture of ME21 layer increased with the rolling passes, which contributed to the improvement of the electrical conductivity as well as the attenuation of reflection. The layered composite exhibited better shielding effectiveness compared with the ME21, in the 8.2-12.4 GHz test frequency, the SE was 98-107dB. The shielding mechanism of layered materials was explained, which provided guiding for the efficient shielding of electromagnetic waves.

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Effect of Li content on electromagnetic shielding effectiveness in binary Mg–Li alloys: a combined experimental and first-principles study

Wang

et al. 2022

J Mater Sci: Mater Electron

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Simultaneous achievement of high electromagnetic shielding effectiveness (X-band) and strength in Mg-Li-Zn-Gd/MWCNTs composite

Cited by 24 publications

References 65 publications

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Microstructures and electromagnetic interference shielding effectiveness of ME21/Mg laminated materials by accumulative roll bonding

Effect of Li content on electromagnetic shielding effectiveness in binary Mg–Li alloys: a combined experimental and first-principles study

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