Synthesis of hexagonal-shaped Cr3C2@C nanoplatelets and role of their intrinsic properties towards microwave absorption

Javid, Muhammad; Qu, Xinghao; Zhao, Yuechao; Huang, Feirong; Farid, Amjad; Zhang, Hao; Shah, Asif; Sammed, Khan Abdul; Duan, Yuping; Zhang, Zhidong; Pan, Lujun; Dong, Xiaoli

doi:10.1016/j.matlet.2021.129329

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…However, due to the strong conductivity, carbon materials alone have poor impedance matching in a wide frequency range. The best method is to combine with magnetic or dielectric components to form composites, which can decrease complex permittivity and increase impedance matching. , …”

Section: Introductionmentioning

confidence: 99%

“…The best method is to combine with magnetic or dielectric components to form composites, which can decrease complex permittivity and increase impedance matching. 17,18 Recently, researchers have adjusted the microwave absorption properties of materials by adjusting the dielectric/ magnetic properties. 19−21 As a p-type semiconductor, nickel oxide (NiO) has been intensively studied in electrochemical, catalytic, and magnetic applications.…”

Section: Introductionmentioning

confidence: 99%

“…The best method is to combine with magnetic or dielectric components to form composites, which can decrease complex permittivity and increase impedance matching. 17 , 18 …”

Section: Introductionmentioning

confidence: 99%

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Facile Synthesis of Metal Oxide Decorated Carbonized Bamboo Fibers with Wideband Microwave Absorption

Guo

Zhao

et al. 2022

ACS Omega

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Aiming at the disadvantages of high cost, complex processes, low yield, and narrow bandwidth of carbon-based microwave absorbing materials, this paper provides a novel and efficient method for synthesizing metal oxide/carbonized bamboo fibers using renewable natural bamboo fibers as a carbon source. The results suggested that the metal oxides such as NiO and Fe3O4 were uniformly dispersed on the carbonized bamboo fibers and proved that the dielectric component NiO and magnetic component Fe3O4 can significantly improve the microwave absorption performance of the carbonized bamboo fibers. As expected, the NiO/carbonized bamboo fibers showed excellent microwave absorption performance due to the appropriate complex permittivity, high impedance matching, and attenuation coefficient. A wide effective bandwidth of 6.4 GHz with 2.2 mm thickness is achieved, covering the entire Ku-band. Remarkably, the reflection loss (RL) values less than −10 dB covered the whole X-band at a thickness of 3.0 mm. This work reveals the potential of carbonized bamboo fibers-based composite as an economic and broadband microwave absorbent and offers a new strategy for designing promising microwave absorption materials.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Facile Synthesis of Metal Oxide Decorated Carbonized Bamboo Fibers with Wideband Microwave Absorption

Guo

Zhao

et al. 2022

ACS Omega

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Comparison of Microwave Versus Conventional Furnace Heat Treatments of Carbide Composite Thermal Spray Coatings

Matthews,

Yang

2024

J Therm Spray Tech

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Thermal spraying has become an industrial standard in the production of wear-resistant WC-Co and Cr3C2-NiCr composite coatings. However, generating optimum wear-resistant nano-reinforced carbide microstructures within the coatings remains challenging. The alternative two-step approach in this work involves coating formation under high energy conditions to generate maximum carbide dissolution, followed by heat treatment to precipitate nanocarbides. Microwave heating of particulate materials has been reported to offer several benefits over conventional furnace heating, including faster heating rates, internal rather than external heating, and acceleration of reactions/phase transformations at lower temperatures. This novel work explored the use of microwaves for heat treatment (as distinct from melting) of WC-Co and Cr3C2-NiCr thermal spray coatings and contrasted the rate of phase development with that from conventional furnace treatment. Coatings were successfully microwave heat-treated to generate the same phase composition as furnace treatment. Both treatments generated comparable results in the Cr3C2-NiCr system. The WC-Co system achieved a much more crystalline structure in a dramatically shorter time relative to the conventional furnace-treated sample. The results are contrasted as a function of material and microstructure interaction with microwaves and the critical phase transition temperatures to account for the observed responses.

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Advances in core—shell engineering of carbon-based composites for electromagnetic wave absorption

Gai

Zhao²,

Wang³

et al. 2022

Nano Res.

120

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Synthesis of hexagonal-shaped Cr3C2@C nanoplatelets and role of their intrinsic properties towards microwave absorption

Cited by 4 publications

References 12 publications

Facile Synthesis of Metal Oxide Decorated Carbonized Bamboo Fibers with Wideband Microwave Absorption

Facile Synthesis of Metal Oxide Decorated Carbonized Bamboo Fibers with Wideband Microwave Absorption

Comparison of Microwave Versus Conventional Furnace Heat Treatments of Carbide Composite Thermal Spray Coatings

Advances in core—shell engineering of carbon-based composites for electromagnetic wave absorption

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