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http://dx.doi.org/10.4191/KCERS.2002.39.4.386

Fabrication of the Conductive Fiber Coated Sb-doped SnO2 Layer  

Kim, Hong-Dae (Gyeongsang National University, Division of materials Science and Engineering)
Choi, Jin-Sam (Gyeongsang National University, Division of materials Science and Engineering)
Shin, Dong-Woo (Gyeongsang National University, Division of materials Science and Engineering)
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Abstract
Fabricatio of the potassium-titanate fiber with K2O${\cdot}nTiO_2$ composition and coating of electrically conductive Sb-doped $SnO_2$ (ATO: Antimony Tin Oxide) layer on the fiber on the fiber were the fiber were the aims of this work. The fiber fabricated by slow-cooling technique showed the mean length of $15{\mu}m$ and mean diameter of $0.5{\mu}m$. Three different coating methods i.e, sol-gel, co-precipitation and urea technique, were attempted to coat the conductive ATO layer on the potassium-titanate fiber. The influences of coating method, concentrations of ATO(5∼70wt%) and Sb (0∼20wt%), temperature in the range of $450\;to\;800^{\circ}C$, number of washing (3∼4 times) on the resistivity of the ATO coated fiber were examined in details. The fiber coated ATO by coprecipitation exhibited lower resistivity of 103${\Omega}{\cdot}$cm at the 30 wt% of ATO, and showed nearly constant low value of $60{\Omega}{\cdot}cm\;to\;90{\Omega}{\cdot}$cm at the higher concentration of ATO.
Keywords
Sb-doped SnO$_2$; Conductive oxide; Potassium-titanate fiber; Coating;
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