발간논문

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Vol.35, No.3, 334 ~ 338, 1997
Title
Research Paper - Electrometallurgy : The Effects of Solid Electrolyte Crystallinity and Diffusion Barrier Thickness of Oxygen Sensing Characteristics of Limiting Current Type YSZ Oxygen Sensor
이동림Dong Rim Lee, 박동원Dong Won Park, 김대용Dai Ryong Kim
Abstract
The limiting current type oxygen sensor is known for excellent characteristics at the low temperatures and throughout the wide oxygen concentration range. In this study, 3 ㏖% Y₂O₃ doped poly-crystal and 15 ㏖% Y₂O₃ doped single-crystal zirconia were used as the solid electrolyte of limiting current type oxygen sensors. The limiting current of the sensor using polycrystalline YSZ was observed over the oxygen concentration range of up to 62.5% and at a temperature range of 560℃∼720℃ in O₂-N₂ mixtures. The sensor using single crystal-YSZ had lower operating voltage than the sensor with polycrystalline YSZ probably due to its low electrolytic resistance.
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