@Article{RamlowSilMarBalMac:2024:CoHeSi,
               author = "Ramlow, Heloisa and Silva, Liangrid Lutiani and Marangoni, Cintia 
                         and Baldan, Maur{\'{\i}}cio Ribeiro and Machado, Ricardo Antonio 
                         Francisco",
          affiliation = "{Universidade Federal de Santa Catarina (UFSC)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal 
                         de Santa Catarina (UFSC)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Universidade Federal de Santa Catarina 
                         (UFSC)}",
                title = "Corrosion and heat-resistant SiCN/C as lightweight fibers for 
                         microwave absorption and electromagnetic field shielding in 
                         Ku-band",
              journal = "Diamond and Related Materials",
                 year = "2024",
               volume = "144",
                pages = "e110985",
                month = "Apr.",
             keywords = "Electrical permittivity, Electrospinning, Polymer-derived ceramic, 
                         Rectangular waveguide aperture, Silicon carbonitride.",
             abstract = "SiCN fibers are usually combined with metals to increase the 
                         magnetic loss in electromagnetic field (EMF) shielding, but this 
                         results in high weight density, easy corrosion, difficult 
                         treatment, and high cost of the material. This study proposes the 
                         manufacturing of corrosion and heat-resistant ceramic lightweight 
                         fibers containing in-situ synthesized carbon nanostructures 
                         (SiCN/C) with excellent EMF shielding in Ku-band (12.418 GHz). The 
                         samples showed differential trends of EMF shielding effectiveness 
                         in terms of reflectance, transmittance, and absorption behavior. 
                         Compared to SiCN fibers, the EMF absorption was two times greater 
                         when carbon was added to the SiCN matrix. A minimum reflection 
                         coefficient (S11) of \−12 dB was observed for SiCN/C 
                         fibers, meaning a high shielding efficiency with >90 % of the EMF 
                         energy shielded. On the other hand, SiCN fibers showed a minimum 
                         S11 of \−7 dB, resulting in a protection of 80 % against 
                         EMF energy. Computational simulations clarified the better 
                         features of SiCN/C in electromagnetic shielding compared to SiCN, 
                         which was ascribed to enhanced conduction loss derived from 
                         conductive free carbon, and dipole and interfacial polarization 
                         loss generated by defects. The fibers were resistant to acidic and 
                         basic environments and oxidation of up to 600 °C. Moreover, the 
                         addition of carbon precursor represented a weight decrease of 17 % 
                         for SiCN/C compared to SiCN fibers. This research will afford an 
                         alternative solution for the manufacturing of SiCN/C fibers with 
                         EMF absorption properties that can be used as lightweight 
                         materials in harsh environments.",
                  doi = "10.1016/j.diamond.2024.110985",
                  url = "http://dx.doi.org/10.1016/j.diamond.2024.110985",
                 issn = "0925-9635",
             language = "en",
           targetfile = "1-s2.0-S0925963524001985-main.pdf",
        urlaccessdate = "03 maio 2024"
}