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在实验室条件下,用自制的CaS(1～1.5wt％TiS_2)固体电解质硫浓差电池测定了1400℃碳饱和铁液和液态生铁中的硫活度。实验所用的电池可以表示为 (+)Mo,W+WS_2|CaS(TiS_2)|[S],Mo金属陶瓷(一) 实验结果表明:在实验条件下,CaS(TiS_2)主要表现为离子导电,其化学性能稳定并具有较高的抗热震性,能满足含碳铁液测硫活度的要求。实验所测得的电动势与硫含量之间的关系为液态生铁1g[S％]=1.118-6.034E(V) (0.03～0.6％S) 碳饱和铁液1g[S％]=3.393-12.375E(V) (0.005～0.15％S) 文章对CaS基固体电解质在1400℃液态生铁和1600℃钢液中的热力学稳定性也分别进行了讨论。
Under laboratory conditions, the sulfur activity in the carbon saturated liquid iron and liquid pig iron at 1400 ℃ was measured with a self-made sulfur-poor battery of CaS (1 ~ 1.5wt% TiS_2) solid electrolyte. The cell used in the experiment can be expressed as (+) Mo, W + WS_2 | CaS (TiS_2) | [S], Mo cermet (1) The experimental results show that under the experimental conditions, CaS (TiS 2) Its chemical stability and high thermal shock resistance, to meet the carbon-containing liquid iron sulfur activity requirements. The relationship between electromotive force and sulfur content measured in the experiment is: 1g [S%] = 1 .398-12.075E (V) (0.03-0.6% S) (V) (0.005-0.15% S) The thermodynamic stability of CaS-based solid electrolytes in liquid pig iron at 1400 ℃ and molten steel at 1600 ℃ was also discussed separately.