• Title/Summary/Keyword: Sol-Gel Method 졸-겔법

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The Effects of Surface Insulation Layer on the Magnetic Properties of Nanocrystalline Alloy Ribbons (표면 절연층이 나노결정립 합금 리본의 자기적 특성에 미치는 영향)

  • Oh, Young-Woo
    • Journal of the Korean Magnetics Society
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    • v.17 no.6
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    • pp.226-231
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    • 2007

  • High frequency loss property of nanocrystalline amorphous ribbon with a high resistivity insulation layer of $TiO_2$ and $SiO_2$ was studied. The insulation layer was fabricated by sol-gel method using dip-coating. The optimum composition ratio of metal alkoxide and slurry for fabrication of insulation layer was established and insulation layer with high adhesion was coated on the nanocrystalline amorphous ribbon. Frequency loss of magnetic core material manufactured on nanocrystalline amorphous ribbon with the surface insulation layer decreased over 40 % compared with that of magnetic core material without surface insulation layer. The insertion loss of an inductive coupler, which was prepared by using magnetic core material coated insulation layer, decreased due to reduction of frequency loss for magnetic core material and insertion loss decreased in proportion to frequency.

  • https://doi.org/10.4283/JKMS.2007.17.6.226 인용 PDF KSCI

Preparation of Silica Core-Hybrid Pigment via Sol-Gel Process and It's Application for Inkjet Dispersion Ink (졸-겔법을 이용한 실리카 핵을 가지는 하이브리드 안료의 제조와 잉크젯 분산 잉크로서 응용)

  • Jeon, Young-Min;Kim, Jong-Gyu;Gong, Myoung-Seon
    • Korean Journal of Materials Research
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    • v.16 no.10
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    • pp.599-605
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    • 2006

  • N-(3-triethoxysilylpropyl)-1,4-diaminoanthrquinone-2,3-dicarboximide (TESP-DADI), an organic blue pigment, has been prepared and incorporated into silica solid matrix reacting triethyl orthosilicate (TEOS) via sol-gel method. Morphology and microstructure of resulting hybrid pigment were studied employing SEM and TEM. The micrographs and particle size distributions showed that uniform pigment can be obtained employing TEOS-based sol-gel method forming silica core. Particle size distribution of dispersed pigment in water was examined using the technique of dynamic light scattering. The ensuing pigment dispersion ink was subjected to various physicochemical evaluation such as viscosity, surface tension, inkjet stability, storage stability, and color change as inkjet ink using spectrophotometric, and microscopic techniques.

  • https://doi.org/10.3740/MRSK.2006.16.10.599 인용 PDF KSCI