| 摘要 |
A gas sensing element, such as may be used to sense the presence of oxygen contained in the exhaust from a burner or internal combustion engine, whereby, by preventing the re-sintering of functional layers of the sensing element, a deterioration of the performance of the element under high-temperature operating conditions is prevented. The inventive sensing element includes a ceramic susbtrate, an electrode layer formed on the ceramic substrate, a first functional layer overlying the ceramic susbtrate and the electrode layer and which contains a transition metal oxide as a main component, and a second functional layer that cover the first functional layer and which contains 1 to 30 wt % of an anti-sintering agent and has a transition metal oxide as a main component.
|
