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Journal of the Korean Ceramic Society 1999;36(9): 991. |
| 전착법에서 용액특성이 지르코니아 막형성에 미치는 영향 |
| 김상우, 이병호, 손용배1, 송휴섭 |
한국과학기술연구원 세라믹공정연구센터
1한국과학기술연구원 세라믹공정연구센 |
| Effect of Slurry Property on Preparation of Zirconia Film in Electrophoretic Deposition |
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| ABSTRACT |
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Effect of solution property on the weight varation and microstructural change of film was studied by electrophoretic deposition in order to obtain a homogeneous and dense zirconia film. As a result of weight kinetics of film which obtained in alcohol or aqueous solution having different polarity experimental data showed large deviation from theoretical ones calculated by Zhang's kinetic model. It had been shown that the weight affecting factors was largely dependent on properties other than dielectric constant and viscosity of solvent zeta potential appiled field and time. In initial stage a main factor of the drastic weight increase was the capillary drag of porous substrate. The cause of weight decrease with time in aqueous solution after 300 s was attributed to the defect of film by sagging and electrolytic reaction. The electrolyte film which prepared in alcohol solution with good wetting for substrate had better homogeneous and dense microstructure than one in aqueous solution with high surface tension. |
| Key words:
Solution property, Zirconia film, Weight kinetics, Capillary drag, Wetting |
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