制得多晶Ｌａ_（０．９５）Ｃａ_（０．０５）Ｆ_（２．９５）固体电解质管，以纯Ｌａ作为参比电极，组成Ｌａ传感器电池形式为：Ｍｏ｜Ｌａ（１）ｏｆ（ｓ）｜Ｌａ_（０．９５）Ｃａ_（０．０５）Ｆ_（２．９５）｜［Ｌａ］Ｆｅ｜Ｍｏ金属陶瓷。于１５７３Ｋ测定了碳饱和铁液中不同Ｌａ浓度下熔解态Ｌａ的活度，与同时用氧传感器测得的氧的变化规律相符合追踪测定了１６２３Ｋ碳饱和铁液凝固过程中溶解态Ｌａ活度随温度的变化，结果呈现规律性Ｌａ传感探头在降温和升温过程中可连续使用。
The La sensor was composed of polycrystalline La0.95Ca0.05Fz.gs as solid electrolyte, pure La as reference electrode and Mo wire as lead wire. It can be expressed as:Mo
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