Synthesis and electromagnetic properties of FeNi alloy nanofibers using an electrospinning method
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
FeNi alloy nanofibers have been prepared by an electrospinning process followed by air-calcination and H2reduction to develop electromagnetic (EM) wave absorbers in the giga-hertz (GHz) frequency range. The thermal behavior and phase and morphology evolution in the synthetic processes were systematically investigated. Through the heat treatments of calcination and H2 reduction, as-spun PVP/FeNi precursor nanofiber has been stepwise transformed into nickel iron oxide and FeNi phases but the fibrous shape was maintained perfectly. The FeNi alloy nanofiber had the high aspect ratio and the average diameter of approximately 190 nm and primarily composed of FeNi nanocrystals with an average diameter of ~60 nm. The FeNi alloy nanofibers could be used for excellent EM wave absorbing materials in the GHz frequency range because the power loss of the FeNi nanofibers increased up to 20 GHz without a degradation and exhibited the superior EM wave absorption properties compared to commercial FeNi nanoparticles.
Abstract
FeNi alloy nanofibers have been prepared by an electrospinning process followed by air-calcination and H2reduction to develop electromagnetic (EM) wave absorbers in the giga-hertz (GHz) frequency range. The thermal behavior and phase and morphology evolution in the synthetic processes were systematically investigated. Through the heat treatments of calcination and H2 reduction, as-spun PVP/FeNi precursor nanofiber has been stepwise transformed into nickel iron oxide and FeNi phases but the fibrous shape was maintained perfectly. The FeNi alloy nanofiber had the high aspect ratio and the average diameter of approximately 190 nm and primarily composed of FeNi nanocrystals with an average diameter of ~60 nm. The FeNi alloy nanofibers could be used for excellent EM wave absorbing materials in the GHz frequency range because the power loss of the FeNi nanofibers increased up to 20 GHz without a degradation and exhibited the superior EM wave absorption properties compared to commercial FeNi nanoparticles.
참고문헌 (17)
- S. Kimura, "Electromagnetic wave absorption properties of carbonyl iron-ferrite", PMMA composites fabricated by hybridization method, 2007, pp.312, 181~
- J. Wei, "Electromagnetic and microwave absorption properties of Fe3O4 magnetic films plated on hollow glass spheres", J. Magn. Magn. Mater, 312, pp.414~ (2007)
- Sook Wai Phang, "Microwave absorption behaviors of polyaniline nanocomposites containing TiO2 nanoparticles", Current Applied Physics, 8(3,4), pp.391~394 (2008), 한국물리학회
- S. Sugimoto, "GHz microwave absorption of a fine α-Fe structure produced by the disproportionation of Sm2Fe17 in hydrogen", J. Alloys Compd, 330, pp.301~ (2002)
- Y. Deng, "Microwave characterization of submicrometer-sized nickel hollow sphere composites", J. Appl. Phys, 100, pp.14304~ (2006)
- J.R. Liu, "Magnetic and electromagnetic wave absorption properties of α-Fe", Z-type Ba-ferrite nanocomposites, 2006, pp.88, 062503~
- X.F. Zhang, "Microwave absorption properties of the carbon-coated nickel nanocapsules", Appl. Phys. Lett, 89, pp.053115~ (2006)
- W.F. Yang, "Microwave permeability of flake-shaped FeCuNb-SiB particle composite with rotational orientation", J. Appl. Phys, 107, pp.033913~ (2010)
- I. Chicinas, "AC magnetic properties of the soft magnetic composites based on nanocrystalline Ni-Fe powders obtained by mechanical alloying", J. Magn. Magn. Mater, 310, pp.2474~ (2007)
- Y. Shirakata, "High permeability and low loss Ni-Fe composite material for high-frequency applications", IEEE Trans. Magn, 44, pp.2100~ (2008)
- M.S. Kim, "Comparison of the effects of particle shape on thin FeSiCr electromagnetic wave absorber", J. Mag. Mag. Mater, 321, pp.581~ (2009)
- M. Itoh, "Electromagnetic wave absorption properties of nanocomposite powders derived from intermetallic compounds and amorphous carbon", J. Alloy Comp, 408, pp.1400~ (2006)
- D. Li, "Fabrication of titania nanofibers by electrospinning", Nano Lett, 3, pp.555~ (2003)
- 송찬근, "전기방사를 이용한 Al이 첨가된 ZnO 나노섬유의 제조 및 광학 특성평가", 한국결정성장학회지, 21(5), pp.205~209 (2011), 한국결정성장학회
- 황지영, "용융전기방사를 이용한 PLA", TiO2 나노섬유의 개발, 2011, pp.21(3), 124~128[DOI]
- S. Cavaliere, "Single step elaboration of size-tuned Pt loaded titania nanofibres", Chem. Commun, 47, pp.6834~ (2011)
- 신순기, "도전성 2상 복합재료의 percolation구조에 미치는 제2상 종횡비의 영향", 대한금속·재료학회지, 48(6), pp.581~587 (2010), 대한금속·재료학회