| 摘要 |
PURPOSE:To prevent the corrosion and separation of an electrode due to combustion gas by incorporating platinum powder dispersedly in a solid electrolytic raw material, and compacting and baking the powder. CONSTITUTION:Platinum powder dispersed in the solid electrolytic body 1 is compacted and baked into fused particles 6 of platinum, which are welded on the electrode 7 near the electrode 7. Thus, the electrode 7 couples tightly with the solid electrolytic body 1 and the corrosion and separation of the electrode 7 due to combustion gas and the resulting deterioration of functions are prevented, so that the sensor element is usable for a long period. |
