Electromagnetic interference shielding properties of silicon nitride ceramics reinforced by in situ grown carbon nanotubes
Source abstract
Abstract
Abstract Carbon nanotubes reinforced silicon nitride (CNTs/Si 3 N 4 ) composite ceramics were fabricated. CNTs were introduced into ceramics by catalytic chemical vapor infiltration. Due to the formation of CNTs, the original isolated pores were connected, which lead to the improvement in the electrical conductivity. When CNT content increased from 0 to 2.7 wt%, total shielding effectiveness (SE T ) of ceramics increased from 6.0 to 30.4 dB. The values of complex permittivity that obtained from scattering parameters have been used to calculate electrical conductivity and absorbed shielding effectiveness (SE A ) of the ceramics. Results had shown that combining CNTs and porous Si 3 N 4 ceramics can be considered as an effective route to design high performance electromagnetic shielding materials. Comparison of SE A calculated from different ways indicated that the multi-reflection effect increased with a higher CNT content.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Energy Technologies and Civil Engineering Innovations · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
Show source-provided references
1. 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 ↗
2. Electrical conductivity and electromagnetic interference shielding efficiency of carbon nanotube/cellulose composite paper10.1016/j.carbon.2008.04.024 ↗
3. Novel carbon nanotube-polystyrene foam composites for electromagnetic interference shielding10.1021/nl051375r ↗
4. The influence of single-walled carbon nanotube structure on the electromagnetic interference shielding efficiency of its epoxy composites10.1016/j.carbon.2007.04.016 ↗
5. Electromagnetic interference shielding mechanisms of CNT/Polymer composites10.1016/j.carbon.2009.02.030 ↗
6. Carbon materials for structural self-sensing, electromagnetic shielding and thermal interfacing10.1016/j.carbon.2012.01.031 ↗
7. Improved dielectric and electromagnetic interference shielding properties of ferrocene-modified polycarbosilane derived SiC/C composite ceramics10.1016/j.jeurceramsoc.2014.02.010 ↗
8. Lightweight and flexible graphene foam composites for high-performance electromagnetic interference shielding10.1002/adma.201204196 ↗
9. Mechanical and electromagnetic shielding properties of SiCf/SiC composites fabricated by combined CVI and PIP process10.1016/j.ceramint.2014.02.103 ↗
10. A novel approach for the fabrication of carbon nanofibre/ceramic porous structures10.1016/j.jeurceramsoc.2013.04.024 ↗
11. Electromagnetic interference shielding and dielectric properties of SiCf/SiC composites containing pyrolytic carbon interphase10.1016/j.carbon.2013.03.061 ↗
12. Microstructural evolution and mechanical properties of Si3N4 with Yb2O3 as a sintering additive10.1111/j.1151-2916.1997.tb02892.x ↗
13. Physical properties and cutting performance of silicon nitride ceramic10.1016/0043-1648(85)90218-2 ↗
14. Sintering and HIPping of silicon nitride-silicon carbide composite materials10.1016/0272-8842(87)90034-4 ↗
15. Combustion synthesis of network silicon nitride porous ceramics10.1016/S0272-8842(02)00145-1 ↗
16. Electromagnetic properties of Si-CN based ceramics and composites10.1179/1743280414Y.0000000037 ↗
17. Microwave attenuation of multiwalled carbon nanotube-fused silica composites10.1063/1.2051806 ↗
18. Electromagnetic properties of pyrolytic carbon-Si3N4 ceramics with gradient PyC distribution10.1016/j.jeurceramsoc.2012.09.028 ↗
19. In-situ formation of carbon nanotubes in pyrolytic carbon–silicon nitride composite ceramics10.1016/j.ceramint.2013.06.035 ↗
20. Dielectric, electromagnetic interference shielding and absorption properties of Si3N4-PyC composite ceramics10.1016/j.jmst.2013.01.011 ↗
21. Effect of chemical vapor infiltration of SiC on the mechanical and electromagnetic properties of Si3N4-SiC ceramic10.1016/j.scriptamat.2010.05.034 ↗
22. Effect of chemical vapor deposition of Si3N4, BN and B4C coatings on the mechanical and dielectric properties of porous Si3N4 ceramic10.1016/j.scriptamat.2011.09.037 ↗
23. Spark plasma sintering: a powerful tool to develop new silicon nitride-based materials10.1016/j.jeurceramsoc.2010.01.025 ↗
24. Robust and wear resistant in-situ carbon nanotube/Si3N4 nanocomposites with a high loading of nanotubes10.1016/j.carbon.2014.02.014 ↗
25. Raman microprobe studies on carbon materials10.1016/0008-6223(94)90148-1 ↗
26. Vapor-liquid-solid mechanism of single crystal growth10.1063/1.1753975 ↗
27. Direct observation of vapor-liquid-solid nanowire growth
28. Catalyst-free growth of SiC nanowires in a porous graphite substrate by low pressure chemical vapor infiltration10.1016/j.ceramint.2014.04.024 ↗
29. Fabrication and electromagnetic interference shielding effectiveness of carbon nanotube reinforced carbon fiber/pyrolytic carbon composites10.1016/j.carbon.2013.11.027 ↗
30. Electromagnetic characterization and shielding effectiveness of concrete composite reinforced with carbon nanotubes in the mobile phones frequency band10.1016/j.mseb.2014.07.001 ↗
31. Broadband electromagnetic absorbers using carbon nanostructure-based composites10.1109/TMTT.2011.2160198 ↗
32. Optimization of multilayer shields made of composite nanostructured materials10.1109/TEMC.2011.2171688 ↗
33. Reflection and absorption contributions to the electromagnetic interference shielding of single-walled carbon nanotube/polyurethane composites10.1016/j.carbon.2006.11.020 ↗
34. A review of vapor grown carbon nanofiber/polymer conductive composites10.1016/j.carbon.2008.09.039 ↗
35. Materials for electromagnetic interference shielding10.1361/105994900770346042 ↗
36. The electromagnetic shielding effectiveness of carbon nanotubes polymer composites10.1016/j.jallcom.2006.08.203 ↗
37. Neelakanta · 1995
38. Paul · 2006
39. Electromagnetic interference shielding effectiveness of carbon nanofiber/LCP composites10.1016/j.compositesa.2004.07.009 ↗
40. Synthesis and electromagnetic characterization of frequency selective radar absorbing materials using carbon nanopowders10.1016/j.carbon.2014.05.080 ↗
41. Tunable nanostructured composite with built-in metallic wire-grid electrode10.1063/1.4837916 ↗
42. Broadband electromagnetic characterization of carbon foam to metal contact10.1016/j.carbon.2013.10.074 ↗
43. Electromagnetic shielding of thermal protection system for hypersonic vehicles10.1016/j.actaastro.2013.02.003 ↗