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2. 发明授权

US5580439A Reference electrode for electrochemical determination of oxygen partial pressure in an ionic melt 失效
标题翻译：用于离子熔体中氧分压的电化学测定的参比电极
公开(公告)号：US5580439A
公开(公告)日：1996-12-03
申请号：US528949
申请日：1995-09-15
申请人： Friedrich Baucke , Thomas Pfeiffer , Sylvia Biedenbender , Gernot Roth , Ralf-Dieter Werner
发明人： Friedrich Baucke , Thomas Pfeiffer , Sylvia Biedenbender , Gernot Roth , Ralf-Dieter Werner
IPC分类号： G01N33/38 , C03B5/00 , C03B5/24 , G01N27/30 , G01N27/411 , G01N27/26
CPC分类号： G01N27/4117
摘要： The method of electrochemical determination of oxygen partial pressure in ionic melts includes providing a metal/metal oxide reference electrode consisting of an electrode body made of a metal selected from the group consisting of Mo, W, Hf, Nb and Ta and alloys thereof and a layer of an oxide of that metal on the electrode body; immersing a pure platinum electrode and the metal/metal oxide reference electrode in a glass melt; measuring a potential across the metal/metal oxide reference electrode and the pure platinum electrode immersed in the glass melt to obtain a measured potential characteristic of the oxygen partial pressure in the glass melt; obtaining a calibration curve relating the potential across said reference electrode and the pure platinum electrode to the oxygen partial pressure in the glass melt as a function of temperature; and obtaining the oxygen partial pressure in the glass melt from the measured potential and the calibration curve. Either the calibration curve is obtained experimentally by immersing a Zirconium dioxide electrode in the glass melt and measuring a potential difference between the metal/metal oxide reference electrode and the Zirconium dioxide electrode at a plurality of temperatures or theoretically from thermodynamic data for the metal/metal oxide reference electrode.
摘要翻译：离子熔体中氧分压的电化学测定方法包括提供金属/金属氧化物参比电极，其由选自Mo，W，Hf，Nb和Ta的金属及其合金构成的电极体和该金属的氧化物层在电极体上; 将纯铂电极和金属/金属氧化物参比电极浸入玻璃熔体中; 测量金属/金属氧化物参比电极和浸入玻璃熔体中的纯铂电极的电位，以获得测量的玻璃熔体中的氧分压的电位特性; 获得将所述参考电极和纯铂电极之间的电位与玻璃熔体中的氧分压相关的校准曲线作为温度的函数; 并从测量的电位和校准曲线获得玻璃熔体中的氧分压。通过将二氧化锆电极浸入玻璃熔体中并且在多个温度下测量金属/金属氧化物参比电极和二氧化锆电极之间的电位差，或者理论上来自金属/金属的热力学数据，可以通过实验获得校准曲线氧化物参比电极。

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