Gas sensing element

Details Gas sensing element Gas sensing element

1988-11-17

1990-09-25

Niebling, John F.

Measuring and testing

Gas analysis

By thermal property

338 34, 422 98, G01N 2704

Patent

active

049585142

ABSTRACT:
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.

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patent: 4066413 (1978-01-01), Segawa et al.
patent: 4377801 (1983-03-01), Weber et al.
patent: 4414531 (1983-11-01), Novak
patent: 4443781 (1984-04-01), Ohta et al.
patent: 4481499 (1984-11-01), Arima et al.
patent: 4505803 (1985-03-01), Mare et al.
patent: 4509034 (1985-04-01), Sakai
patent: 4532492 (1985-07-01), Esper et al.

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