Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
Determination of a Partial Electronic Conduction Parameter of Solid Eelectrolytes for an Oxygen Sensor by using AC Two Terminals Method
Minoru SASABEMasao MIYASHITAJiang Zhao HUAHiromi SENOO
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JOURNALS FREE ACCESS

1991 Volume 77 Issue 6 Pages 790-797

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Abstract

A new determination procedure of a partial electronic conduction parameter of a solid electrolyte applied to an oxygen sensor has been developed. It has been confirmed that the partial electronic conduction parameter measured with this procedure is the same that measured with a previous procedure, Swinkels method.
The procedure has following advantages:
1. The procedure can be applied to smaller size of solid electrolyte like 10 mm in long and 2 mm in diameter.
2. The procedure has no restriction concerning the shape of the solid electrolyte.
3. The solid electrolyte is not contaminated during the measurement.
4. Measuring time is shorter than that by the previous method.
The following partial electronic conduction parameters are observed:
ZrO2-7 mol%MgO: log Pe'=19.1-70×103/T ZrO2-8 mol%MgO: log Pe'=19.8-70×103/T
ZrO2-9 mol%MgO: log Pe'=23.9-70×103/T ZrO2-15 mol%MgO: log Pe'=25.7-70×103/T
ZrO2-11 mol%CaO: log Pe'=37.8-91×103/T ZrO2-15 mol%CaO: log Pe'=37.8-91×103/T
ZrO2-6 mol%Y2O3: log Pe'=20.1-63×103/T ZrO2-8 mol%Y2O3: log Pe'=20.1-63×103/T

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© The Iron and Steel Institute of Japan
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