Oxygen sensor element
An oxygen sensor and component technology, which is applied in the field of material composition of gas sensor components, can solve problems such as insufficient durability, sensor component degradation, carbonation, etc., and achieve good sensor characteristics and high humidity resistance.
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[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings and the like. The oxygen sensor element of the present embodiment is formed of a ceramic sintered body, and the central part of the sintered body is heated at a high temperature by connecting it to a power source and passing a current, and this heat-generating part (called a hot spot) is used as an oxygen concentration detection part. . In addition, the oxygen sensor using the oxygen sensor element of this embodiment as a sensor element detects the oxygen concentration based on the value of the current flowing through the sintered body as the sensor element.
[0030] The oxygen sensor element as the detector of the oxygen concentration in this embodiment has the following composition: 2 Cu 3 o 7-δ The composition (hereinafter referred to as the existing composition) forms part of the material, which is selected from the elements of group 2 of the periodic tabl...
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