DETERMINATION METHOD OF PARTIAL ELECTRONIC CONDUCTION PARAMETER OF SOLID ELECTROLYTE FOR OXYGEN SENSOR FOR IRON- AND STEELMAKING

研制了一种用于测定钢水中氧含量的氧传感器用固体电解质部分电子传导参数Pe的装置。该方法的原理是基于2极阻抗法。仪器测定的数值与斯温克尔斯法测定的数值相同。仪器的突出未来如下；1. 可以测量尺寸较小的固体电解质的部分电子传导参数。2. 测量时间比swinkels法短得多。用该仪器测量了ZrO_2-MgO工业级固体电解质的部分电子传导参数。测量结果如下：1. MgO含量越小，Pe'越小。2. 不同厂家提供的固体电解质，其Pe值不同。

An apparatus to determine partial electronic conduction parameter, Pe' , of solid electrolytes for oxygen sensor to determine oxygen contents in molten steel has been developed. Principle of the method has been based on 2 poles impedance method.The values determined by the apparatus are the same as that by swinkels method. Prominence futures of the apparatus are as follows; 1. Partial electronic conduction parameter of smaller size of solid electrolyte can be measured. 2. Measuring time is much shorter than that of swinkels method.The partial electronic conduction parameter of commercial grade solid electrolyte of ZrO_2-MgO has been measured by the apparatus. Measured results are as follows; 1. The smaller contents of MgO, the semller Pe'. 2. Different Pe' can be observed when solid electrolytes supplied by different manufacture were observed.