V_2O_5-SrO-Sb_2O_3系ガラスの酸素感ガス特性

概要

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Oxygen gas sensing properties in dc conductivity of a semiconductive glass in the system V_2O_5 SrO Sb_2O_3 with a composition V_2O_5 : SrO : Sb_2O_3=73 : 18 : 9 (mol%) were investigated in flowing oxygen and ar gon gases at temperatures between 433 and 439 K. The conductivity was lower in O_2 and higher in Ar than that in air. This was attributable to changes in the concen tration of V^<4+> ion as a function of oxygen partial pres sure. Changes in conductivity by switching the flowing atmosphere between O_2 and Ar gases were found to be reproducible. Sensitivity of 4.5 (433K) was obtained to 100% oxygen. The dynamic changes in conductivity by switching the flowing atmospheres were well ex plaplained by an oxygen diffusion and desorption model.
社団法人日本セラミックス協会の論文
1994-04-01