| 摘要 |
PURPOSE:To provide a gas detecting element wherein a solid electrolyte is coated with two electrodes made of the same material, and one electrode of said two electrodes is covered with a catalyst capable of oxidizing a burnable gas, thereby reducing the aging variation and lowering the working temperature. CONSTITUTION:A stabilized ZrO2 plate 31 having a thickness of 1 to 2 mm, a diameter of 20 mm and ZrO2 : Y2O3 =92.8 molar ratio is coated with semicircular Pt membranes 32 and 33 having a diameter of 12 mm and a thickness of 0.22 mum by an electronic evaporating method, thereby forming electrodes. The surface of an electrode 33 is coated with a Pt catalyst 34 such as GAMMA-Al2O3 containing about 0.5% of Pt, and thus a gas detecting element is formed. |
