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J. Korean Ceram. Soc. > Volume 46(1); 2009 > Article
Journal of the Korean Ceramic Society 2009;46(1): 74.
doi: https://doi.org/10.4191/kcers.2009.46.1.074
전기방사법에 의한 NiZn 페라이트 나노섬유의 제조 및 특성 연구
주용휘, 남중희, 조정호, 전명표, 김병익, 고태경1
요업기술원 첨단소재.부품팀
1인하대학교 신소재공학부
Preparation and Characterization of NiZn-Ferrite Nanofibers Fabricated by Electrospinning Process
Yong-Hui Joo, Joong-Hee Nam, Jeong-Ho Cho, Myoung-Pyo Chun, Byung-Ik Kim, Tae-Gyung Ko1
Advanced Materials & Components Laboratory, Korea Institute of Ceramic Engineering and Technology
1School of Materials Science and Engineering, Inha University
Electrospinning process is the useful and unique method to produce nanofibers from metal precursor and polymer solution by controlled viscosity. In this study, the NiZn ferrite nanofibers were prepared by electrospinning with a aqueous metal salts/polymer solution that contained polyvinyl pyrrolidone and Fe (III) chloride, Ni (II) acetate tetrahydrate and zinc acetate dihydrate in N,N-dimethylformamide. The applied electric field and spurting rate for spinning conditions were 10 kV, 2 ml/h, respectively. The obtained fibers were treated at $250^{circ}C$ for 1 h to remove the polymer. Finally, the NiZn ferrite fibers were calcined at $600^{circ}C$ for 3 h and annealed at $900{sim}1200^{circ}C$ in air. By tuning the viscosity of batch solution before electrospinning, we were able to control the microstructure of NiZn ferrite fiber in the range of $150{sim}500;nm$ at 770 cP. The primary particle size in $600^{circ}C$ calcined ferrite fiber was about 10 nm. The properties of those NiZn ferrite fibers were determined from X-ray diffraction analysis, electron microscopy, energy dispersive spectroscopy, Fourier transform infrared spectroscopy, thermal analysis, and magnetic measurement.
Key words: Electrospinning, Ferrite nanofiber, NiZn ferrites, Multiple grain
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