통합 검색 | Korea Science

홍성제;한정인
- 한국전기전자재료학회논문지
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- 제18권10호
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- pp.929-935
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- 2005
In this paper, synthetic conditions of titania nanparticle was investigated to enhance its uniformity of the particle size as a child particle on organic mother particle of liquid powder type electronic paper. The physical properties are very important to improve the uniformity of electrical charging properties Concentration of titania raw material ($C_9H_{19}NO_4Ti$) in the ethanol solvent, pH, and concentration of the solution in the D.I. water were selected as parameters. As a result, ultrafine and well crystallized titania nanoparticle with good uniformity could be synthesized as the concentration of the $C_9H_{19}NO_4Ti$ in the ethanol solvent, pH of the solution, and the amount of the D.I. water were increased. Using the optimized conditions, the titania nanparoticle with uniformly ultrafime size of 10 nm could be synthesized.
https://doi.org/10.4313/JKEM.2005.18.10.929 인용 PDF KSCI

Soh, Dea-Wha;Tlek, Ketegenov;Z.A., Mansurov
- 한국전기전자재료학회:학술대회논문집
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- 한국전기전자재료학회 2002년도 하계학술대회 논문집 Vol.3 No.2
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- pp.666-669
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- 2002
The differences of the effects of mechanical substance pre-activation in the mills with divers force effect schemes on the self-propagating high temperature synthesis (SHS) of the $SiO_2$ + 37.5% Al system were investigated. The power saturation of activated material state are estimated referring on the variations of dilatometry curve paths. The effects of activation time on the temperature of sample self-ignited in the furnace, combustion temperature and completeness of the quartz reaction with aluminium were determined. The enhancing effects of organic modifiers of quartz particle surfaces on the further SHS synthesis development were shown.
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Soh, Deawha;Cho,Yongioon;Korobova, N.;Isaikina, O.
- 한국전기전자재료학회:학술대회논문집
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- 한국전기전자재료학회 2002년도 하계학술대회 논문집
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- pp.94-97
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- 2002
BSCCO (2223) compound which has the highest temperature of transition to the superconducting state in the homologous series considered is synthesized by SHS. The method exploits self-sustaining solid-flame combustion reactions which develop very high internal material temperatures over short periods. This report introduces the SHS method and its advantages and discusses its application in the synthesis of superconducting materials.
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조정호;조주현;김강언;정수태
- 한국전기전자재료학회:학술대회논문집
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- 한국전기전자재료학회 2001년도 추계학술대회 논문집 Vol.14 No.1
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- pp.406-409
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- 2001
The conductivity properties and synthesis of $LaNiO_{3}$ ceramics from $La_{1+\delta}NiO_{3}(\delta=-0.06,0,0.06)$ were investigated. A single perovskite phase was realized at $800^{\circ}C$. $La_{2}NiO_{4}$ and other unexpected oxide were observed at $1000^{\circ}C$. The Microstructure was showed clearly that it is a low density porous material. $LaNiO_3$ ceramic showed a metallic conductivity. The conductivity of La rich samples had a higher value than the La poor samples.
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조정호;조주현;김강언;정수태
- 한국전기전자재료학회:학술대회논문집
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- 한국전기전자재료학회 2001년도 추계학술대회 논문집
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- pp.406-409
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- 2001
The conductivity properties and synthesis of LaNiO$_3$ ceramics from La$\sub$1+$\delta$/NiO$_3$($\delta$=--0.06, 0, 0.06) were investigated. A single perovskite phase was realized at 800$^{\circ}C$. La$_2$NiO$_4$ and other unexpected oxide were observed at 1000$^{\circ}C$. The Microstructure was showed clearly that it is a low density porous material. LaNiO$_3$ ceramic showed a metallic conductivity. The conductivity of La rich samples had a higher value than the La poor samples.
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김한주;신달우;김용철;김성호;박수길
- 한국전기전자재료학회:학술대회논문집
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- 한국전기전자재료학회 2000년도 추계학술대회 논문집
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- pp.606-609
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- 2000
We describe the preparation of a manganese oxide polymorph in which the solid-pore architecture of the material is controllably varied. All MnO$_2$ gels derived from a KMnO$\_$4/-based sol-gel synthesis. The mesoporous structure of the initial gel is maintained by removingore fluid under conditions where the capillary forces that result fro extraction are either low or no existent. are either low or noexistent. Controlling both the pore and solid architecture on the nanoscale offers a strategy for the design of supercapacitor.
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