• Analytical Science and Technology
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• v.7 no.3
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• pp.371-378
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• 1994

The detection range of this galvanic oxygen sensor for oxygen concentration was 0.0% to 20.0%. By using gold or silver as cathode, reproducible response time and sensitivity to change of oxygen concentration were observed. The anode was Pb-Sn-Ca alloy. Oxygen selective permeable membrane was hydrophobic and porous Teflon film. The effect of the membranes varying in thickness have been studied on the temperature($10{\sim}50^{\circ}C$) and relative humidity(R. H 0~99%). Lead acetate buffer solution as the electrolyte has shown a high output voltage and longer life.

• KSBB Journal
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• v.19 no.1
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• pp.62-66
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• 2004

The oxygen permeation characteristics of BOPP, OPP and CPP membranes were studied against various thicknesses and temperatures. The experimental results showed that the present method of using electrochemical oxygen sensor was a convenient method for measurement of membrane permeability of oxygen and its activation energy, while the thickness dependency on permeability has an order of BOPP ＞ CPP ＞ OPP. And the activation energy of oxygen permeability showed different values for each membrane ranging from 13.1 kJ/mol to 28.5 kJ/mol, without depending on membrane thickness, presumably due to its depending upon membrane material itself.

• Journal of the Korean Ceramic Society
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• v.23 no.1
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• pp.13-20
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• 1986

Zirconia soild electrolytes containing 4~10mol% of yttria were prepared by wet-blending of oxides and rea-ction-sintering, Sinterbility and degree of stabilization were optimized for the development of oxygen sensor. Fracture strength thermal expansion coefficient electrical conductivity and galvanic potential were measured and discussed with respect to the amount of ytria addition phase transformation microstructure and degree of stabilization. It was found that sintering and stabilization occurred when the composition was designed to be near the boundary region of $ZrO_2-Y_2O_3$ binary system. In such away a good zirconia solid electrolyte suitable for oxygen sensor could be developed.