Detector for concentration of oxygen
专利汇可以提供Detector for concentration of oxygen专利检索，专利查询，专利分析的服务。并且PURPOSE:To prevent an exfoliation of an electrode and improve bad electric conductivity and the durability, by forming two layers construction type electrode layer composed of a porous electric conductive metallic layer and a fine metallic catalyst having a smaller grain size than said layer on the side of detection gas of a solid electrolyte body. CONSTITUTION:The second metallic layer 2b having a high catalytic activity is formed on the surface of the first metallic layer 2a placed on the side of exposing to exhaust gas of a solid electrolyte body 1 and the conduction by this layer is guaranteed, the layer 2 is not sintered in case of use, lowering of electric conductivity is not occurred nearly and durability is improved because of heat-treating the layer 2a at a use maximum temperature or more here. Also, an electrode is reached a three phase boundary point easily by the exhaust gas because the electrode is not dense because of being constituting grain of the layer 2 coarse and many large pores exist. Further, oxidation reaction with O2, HC, CO in the components of the exhaust gas on the surface of the body 1 is accelerated because of being a catalytic action of the layer 2b strong and accurate concentration of oxygen can be detected by reacting an oxygen concentration detecting element 1 with the concentration variation of gas components in the exhaust gas sharply.，下面是Detector for concentration of oxygen专利的具体信息内容。
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