Abstract The effect of the phosphorus in the molten iron on the performance of sulfur sensor was investigated, where the sulfur sensor was prepared by bilayer system of ZrO2(MgO)/CaAl2O4+CaAl4O7. The behavior and mechanism were also studied in this work. The results indicated that the CaS auxiliary electrode for sulfur sensor could be synthesized in situ by the CaAl2O4+CaAl4O7 coating at the measurement condition of a [ S ] a [ O ] ≥ 40 .85 and a [ P ] ⋅ a [ O ] 5 2 ≤ 4 .34 × 1 0 − 7 in the molten iron. The effect of the phosphorus on the performance of the sulfur sensor was attributed to the effect on sulfur activity coefficient. In contrast, when a [ S ] a [ O ] ≥ 40 .85 and a [ P ] ⋅ a [ O ] 5 2 ≥ 4 .34 × 1 0 − 7 was satisfied in the molten iron, the assembled sensor would not response to sulfur signal, but to phosphorus signal. The assembled sensor would be in effect to be the phosphorus sensor. This work would be beneficial to the practical application of the fabricated sensor in the iron and steel metallurgical industry.

中文翻译：

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铁水中磷对ZrO2(MgO)/CaAl2O4+CaAl4O7制备电化学硫传感器性能的影响

摘要 研究了铁水中磷对硫传感器性能的影响，采用ZrO2(MgO)/CaAl2O4+CaAl4O7双层体系制备硫传感器。在这项工作中还研究了行为和机制。结果表明，在a [ S ] a [ O ] ≥ 40 .85 和a [ P ] ⋅ a [ O ] 5 的测量条件下，CaAl2O4+CaAl4O7涂层可以原位合成用于硫传感器的CaS辅助电极。 2 ≤ 4 .34 × 1 0 − 7 在铁水中。磷对硫传感器性能的影响归因于对硫活度系数的影响。相反，当 a [ S ] a [ O ] ≥ 40 .85 和 a [ P ] ⋅ a [ O ] 5 2 ≥ 4 .34 × 1 0 − 7 在铁水中满足时，组装的传感器将不会响应硫信号，但磷信号。组装好的传感器实际上是磷传感器。这项工作将有利于制造传感器在钢铁冶金行业的实际应用。