{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["8(59)"],"submitter":["Hou Y"],"pubmed_abstract":["Flexible Fe<sub>3</sub>Si/SiC ultrathin fiber mats have been fabricated by electrospinning and high temperature treatment (1400 °C) using polycarbosilane (PCS) and ferric acetylacetonate (Fe(acac)<sub>3</sub>) as precursors. The crystallization degree, flexibility, electrical conductivity, dielectric loss and microwave absorption properties of the hybrid fibers have been dramatically enhanced by the introduction of Fe. Fe<sub>3</sub>Si nanoparticles with a diameter around 500 nm are embedded in SiC fibers. As the Fe<sub>3</sub>Si content increases from 0 to 6.5 wt%, the related saturation magnetization (<i>M</i> <sub>s</sub>) values increase from 0 to 8.4 emu g<sup>-1</sup>, and the electrical conductivity rises from 7.9 × 10<sup>-8</sup> to 3.1 × 10<sup>-3</sup> S cm<sup>-1</sup>. Moreover, the flexibility of Fe<sub>3</sub>Si/SiC hybrid fiber mats is greatly improved and remains intact after 500 times 180°-bending testing. Compared with pure SiC fibers, the Fe<sub>3</sub>Si/SiC hybrid fibers process higher dielectric and magnetic loss, which would be further advanced as more Fe<sub>3</sub>Si phase is introduced. At the optimal Fe<sub>3</sub>Si content of 3.8 wt%, the Fe<sub>3</sub>Si/SiC fibers/silicon resin composite (5 wt%) exhibits minimal reflection loss (RL) of -22.5 dB at 16.5 GHz and 2.5 mm thickness with a wide effective absorption bandwidth (EAB, RL < -10 dB) of 8.5 GHz. The microwave absorption performance can be further promoted by multi component stacking fiber mat composites which contain both low and high Fe<sub>3</sub>Si content layers. Furthermore, the position of the microwave absorption bands can also be simply manipulated by designing the stacking components and structure."],"journal":["RSC advances"],"pagination":["33574-33582"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9086545"],"repository":["biostudies-literature"],"pubmed_title":["Flexible Fe<sub>3</sub>Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance."],"pmcid":["PMC9086545"],"pubmed_authors":["Deng C","Yang Z","Yang Y","Zhang Y","Zheng L","Du X","Cheng L","Hou Y"],"additional_accession":[]},"is_claimable":false,"name":"Flexible Fe<sub>3</sub>Si/SiC ultrathin hybrid fiber mats with designable microwave absorption performance.","description":"Flexible Fe<sub>3</sub>Si/SiC ultrathin fiber mats have been fabricated by electrospinning and high temperature treatment (1400 °C) using polycarbosilane (PCS) and ferric acetylacetonate (Fe(acac)<sub>3</sub>) as precursors. The crystallization degree, flexibility, electrical conductivity, dielectric loss and microwave absorption properties of the hybrid fibers have been dramatically enhanced by the introduction of Fe. Fe<sub>3</sub>Si nanoparticles with a diameter around 500 nm are embedded in SiC fibers. As the Fe<sub>3</sub>Si content increases from 0 to 6.5 wt%, the related saturation magnetization (<i>M</i> <sub>s</sub>) values increase from 0 to 8.4 emu g<sup>-1</sup>, and the electrical conductivity rises from 7.9 × 10<sup>-8</sup> to 3.1 × 10<sup>-3</sup> S cm<sup>-1</sup>. Moreover, the flexibility of Fe<sub>3</sub>Si/SiC hybrid fiber mats is greatly improved and remains intact after 500 times 180°-bending testing. Compared with pure SiC fibers, the Fe<sub>3</sub>Si/SiC hybrid fibers process higher dielectric and magnetic loss, which would be further advanced as more Fe<sub>3</sub>Si phase is introduced. At the optimal Fe<sub>3</sub>Si content of 3.8 wt%, the Fe<sub>3</sub>Si/SiC fibers/silicon resin composite (5 wt%) exhibits minimal reflection loss (RL) of -22.5 dB at 16.5 GHz and 2.5 mm thickness with a wide effective absorption bandwidth (EAB, RL < -10 dB) of 8.5 GHz. The microwave absorption performance can be further promoted by multi component stacking fiber mat composites which contain both low and high Fe<sub>3</sub>Si content layers. Furthermore, the position of the microwave absorption bands can also be simply manipulated by designing the stacking components and structure.","dates":{"release":"2018-01-01T00:00:00Z","publication":"2018 Sep","modification":"2024-11-12T12:13:29.881Z","creation":"2024-11-12T12:13:29.881Z"},"accession":"S-EPMC9086545","cross_references":{"pubmed":["35548844"],"doi":["10.1039/c8ra06941g"]}}