| 摘要 |
A gas sensor element is designed to determine the concentration of a selected component contained in gas and includes a sensor cell. The sensor cell is equipped with two electrodes one of which is exposed to a gas chamber into which the gas flows from outside the gas sensor element. The electrodes connect with leads extending to external terminals exposed to the atmospheric air. One of the leads connecting with one of the electrodes exposed to the gas chamber is made of material which includes a mixture of a metallic composition and a ceramic composition and contains 7% or less by weight of the ceramic composition based on a total weight of the mixture. This results in a decrease in porosity of the lead, which reduces the intrusion of oxygen gas into the gas chamber, thereby enhancing the accuracy in determining the concentration of the selected component of the gas. |
