金属液中定硫传感器的稳定性

采用高温化学电池固体电解质的方法来测定碳饱和铁液中的硫含量。用ZrO2(Y2O3)作为定硫传感器的固体电解质，将Y2O3＋Y2O2S作为其辅助电极组成A型定硫传感器；或用ZrO2（Y2O3）＋Y2O2S直接作为固体电解质组成B型定硫传感器。其电池形式分别为：Mo,Cr2O3＋Cr|ZrO2(Y2O3)|Y2O3 Y2O2S|[S]Fe,Mo,Mo;Mo,Cr2O3 Cr|ZrO2(Y2O3) Y2O2S|[S]Fe,Mo。定硫实验结果表明，该定硫传感器所测电动势信号稳定，响应快，重现性好，持续时间长，准确度较高，是一种比较成功的定硫传感器。此外，还得到了在1583K下电动势与铁液中硫含量的关系。

Study on Stability of Determining Sulfur Sensors in Liquid Metal

The high temperature chemical cell was used for determining sulfur content in carbon saturated liquid iron. The powder of ZrO 2 (Y 2O 3) was acted as solid electrolyte, and the mixture of Y 2O 3 and Y 2O 2S was acted as its auxiliary electrode of A type determining sulfur sensors. The mixture of ZrO 2 (Y 2O 3) and Y 2O 2S was used as solid electrolyte of B type determining sulfur sensors directly. The experimental results on measuring sulfur concentration in cast iron indicated that the signal of these two kinds of sensors are stable. The sensors have fast response, good reproducibility, long continuous time, and high accuracy. The sulfur content in the cast iron was obtained at 1 583 K.