Electromagnetic interference shielding and microwave absorption performance of magnetic Co@C/Na2SiO3 composite at 673 K
Source abstract
Abstract
Abstract A high temperature microwave absorber with magnetic metal as an additive (Planar anisotropy Co@C/Na2SiO3 composite) was successfully fabricated. Following a C-coat treatment and complex formation with Na2SiO3, the composite worked stably at 673 K and showed outstanding high temperature stability. Evaluation of TG analysis results and static magnetic properties before and after sintering adequately illustrated that its antioxidant performance was outstanding. Its electromagnetic interference (EMI) shielding may reach 20 dB with a thickness of 10 mm, where absorption inside the composite was the main mechanism underlying attenuation. A reflection loss (RL) intensity below −8 dB may be obtained in the X band with a thickness of 1.7 mm at 673 K. The absorption strength of the composite was lower than −10 dB in the range of 8.7–11.8 GHz. Moreover, the composite showed excellent stability at high temperatures. Compared with dielectric loss absorbers, magnetic metallic absorbers have an obvious advantage in both absorption performance and price, and show irreplaceable potential for extensive use and commercialization in the field of high temperature absorbance.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
Show source-provided references
1. Preparation and electromagnetic wave absorption performance of Fe3Si/SiC@SiO2 nanoparticles10.1016/j.cej.2019.01.039 ↗
2. Enhanced impedance matching and microwave absorption properties of the MAMs by using ball-milled flaky carbonyl iron-BaFe12O19 as compound absorbent10.1016/j.jmmm.2018.07.031 ↗
3. Enhanced antioxidation and microwave absorbing properties of SiO2-coated flaky carbonyl iron particles10.1016/j.jmmm.2017.09.022 ↗
4. High frequency magnetic properties of Pr2Fe17N3− δ particles with planar anisotropy10.1016/j.physb.2010.08.040 ↗
5. The studies of high-frequency magnetic properties and absorption characteristics for amorphous-filler composites10.1016/j.jmmm.2015.04.027 ↗
6. Graphene shield by SiBCN ceramic: a promising high temperature electromagnetic wave-absorbing material with oxidation resistance10.1021/acsami.8b15365 ↗
7. Temperature dependence of the electromagnetic properties of graphene nanosheet reinforced alumina ceramics in the X-band
8. The effects of temperature and frequency on the dielectric properties, electromagnetic interference shielding and microwave-absorption of short carbon fiber/silica composites10.1016/j.carbon.2009.10.028 ↗
9. High-temperature microwave absorbing properties of ordered mesoporous inter-filled SiC/SiO2 composites10.1016/j.ceramint.2016.09.151 ↗
10. Dielectric properties of SiC fiber-reinforced SiC matrix composites in the temperature range from 25 to 700 °C at frequencies between 8.2 and 18 GHz10.1016/j.jnucmat.2012.08.026 ↗
11. Enhanced microwave absorption properties of Co-doped SiC at elevated temperature10.1016/j.apsusc.2018.03.203 ↗
12. High dielectric loss and its monotonic dependence of conducting-dominated multiwalled carbon nanotubes/silica nanocomposite on temperature ranging from 373 to 873 K in X-band10.1063/1.3152764 ↗
13. High-temperature dielectric and microwave absorption properties of Si3N4– SiC/SiO2 composite ceramics10.1007/s10853-014-8709-y ↗
14. Nitrogen-doped graphene and titanium carbide nanosheet synergistically reinforced epoxy composites as high-performance microwave absorbers10.1039/C7RA02417G ↗
15. Poly (dimethylsilylene) diacetylenes guided ZIF-based heterostructures for full Ku-band electromagnetic wave absorption10.1021/acsami.9b03944 ↗
16. Recoverable and self-healing electromagnetic wave absorbing nanocomposites10.1016/j.compscitech.2019.02.018 ↗
17. Titanium carbide (MXene) nanosheets as promising microwave absorbers10.1016/j.ceramint.2016.07.150 ↗
18. Microwave absorption properties of flake-shaped Co particles composites at elevated temperature (293 ~ 673 K) in X band10.1016/j.jmmm.2018.02.024 ↗
19. A facile route to synthesize core/shell structured carbon/magnetic nanoparticles hybrid and their magnetic properties10.1016/j.materresbull.2015.03.027 ↗
20. Enhanced microwave absorption properties and mechanism of core/shell structured magnetic nanoparticles/carbon-based nanohybrids10.1016/j.mseb.2016.05.018 ↗
21. Heteronanostructured Co@carbon nanotubes-graphene ternary hybrids: synthesis, electromagnetic and excellent microwave absorption properties10.1038/srep37972 ↗
22. Preparation, electromagnetic and enhanced microwave absorption properties of Fe nanoparticles encapsulated in carbon nanotubes10.1016/j.mseb.2015.04.005 ↗
23. The synthesis and excellent electromagnetic radiation absorption properties of core/shell-structured Co/carbon nanotube – graphene nanocomposites10.1039/C5RA24599K ↗
24. Synthesis, characterization and dielectric properties of one-step pyrolyzed/activated resorcinol-formaldehyde based carbon aerogels for electromagnetic interference shielding applications10.1016/j.matchemphys.2018.04.047 ↗
25. Application of ferrite to electromagnetic wave absorber and its characteristics10.1109/TMTT.1971.1127446 ↗
26. Complex permeability and permittivity and microwave absorption of ferrite-rubber composite at X -band frequencies10.1109/20.278872 ↗
27. Electromagnetic properties of Co flaky particles prepared via ball-milling method10.1016/j.jmmm.2016.04.037 ↗
28. Direct observation of dipolar chains in iron ferrofluids by cryogenic electron microscopy10.1038/nmat811 ↗
29. Temperature dependence of the electromagnetic properties and microwave absorption of carbonyl iron particles/silicone resin composites10.1016/j.jmmm.2014.08.059 ↗
30. Enhanced microwave absorption of ZnO-coated planar anisotropy carbonyl-iron particles in quasimicrowave frequency band10.1016/j.matchemphys.2011.03.062 ↗
31. Microwave-absorbing properties of de-aggregated flake-shaped carbonyl-iron particle composites at 2-18 GHz10.1109/TMAG.2006.874188 ↗
32. Fabrication and investigation on the PANI/MWCNT/thermally annealed graphene aerogel/epoxy electromagnetic interference shielding nanocomposites10.1016/j.compositesa.2019.03.041 ↗
33. Fabrication on the annealed Ti3C2Tx MXene/Epoxy nanocomposites for electromagnetic interference shielding application10.1016/j.compositesb.2019.04.050 ↗
34. Graphene nanosheets/BaTiO3 ceramics as highly efficient electromagnetic interference shielding materials in the X-band10.1039/C5TC03035H ↗
35. Superior electromagnetic interference shielding 3D graphene nanoplatelets/reduced graphene oxide foam/epoxy nanocomposites with high thermal conductivity10.1039/C8TC05955A ↗
36. Reflection loss mechanism of single layer absorber for flake-shaped carbonyl-iron particle composite10.1063/1.4767365 ↗
37. The relationship of permeability and permittivity at the perfect matching point of electromagnetic wave absorption for the absorber filled by metallic magnetic particles