用铬传感器测定碳饱和铁液中Cr的活度  

APPLICATION OF CHROMIUM SENSOR TO MEASUREMENT OF CHROMIUM ACTIVITY IN CARBON SATURATED IRON MELT

作　　者：徐秀光[1] 王常珍[1] 于化龙[1] 曲向东 

机构地区：[1]东北大学,沈阳110006

出　　处：《金属学报》1997年第9期959-963,共5页Acta Metallurgica Sinica

摘　　要：用ZrO2（MgO）固体电解质，以CasiO3＋Cr2O3作为辅助电极，组成铬传感探头：Mo|Cr，Cr2O3|ZrO2（MgO）|CaSiO3，Cr2O3|[Cr]Fe|Mo－ZrO2于1753K测定了碳饱和铁液中Cr的活度该探头响应快，约2—3s即可得到稳定的电动势值。The Cr sensor was composed of ZrO2(MgO) solid electrolyte,CaSiO3+Cr2O3 auxiliary electrode, Cr+Cr2O3 reference electrode and Mo wire, Mo+ZrO2 stick as lead wire. It can be expressed as: Mol Cr, Cr2O3| ZrO2(MgO)| CaSiO3,Cr2O3|[Cr]Fe|Mo-ZrO2. The activity of Cr in C-saturated iron melt at 1753 K with different Cr content was determined. About 2-3 s the steady EMF was obtained and its error is within ±1-2 mV. The relation between activity and content of Cr shows regularity.

关 键 词：电化学传感器 活度 铬分析 碳饱和铁液 

分 类 号：TF513[冶金工程—钢铁冶金]