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Solid Reference Electrode of Metallurgical Oxygen Sensor

机译:冶金氧传感器固体参比电极

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The thermal equilibrium state of the reference electrode was investigated. The results show that the temperature difference between the inside and the outside of zirconia tube was very small and the Seebeck effect can be ignored after the sensor was dipped into liquid steel for more than 2 s. A special sensor was designed to test the relation between the EMF (electromotive force) of sensor and the thermal equilibrium state of the reference electrode. Based on these results, it is suggested that the peak in EMF curve was caused by the change of oxygen potential in reference electrode before the thermal equilibrium was reached. If NiO was added by 2 percent -5 percent to the Cr/Cr_2O_3 reference electrode, the peak in EMF curve could be eliminated.
机译:研究参比电极的热平衡状态。结果表明,将传感器浸入液态钢中超过2 s后,氧化锆管的内外温差很小,可以忽略塞贝克效应。设计了一种特殊的传感器来测试传感器的EMF(电动势)与参比电极的热平衡状态之间的关系。根据这些结果,表明EMF曲线中的峰值是由达到热平衡之前参比电极中氧势的变化引起的。如果在Cr / Cr_2O_3参比电极中添加2%-5%的NiO,则可以消除EMF曲线中的峰值。

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