Methods of making gas sensors and sensors formed therefrom
US7097875B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2002 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Feb 17, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In one embodiment, a method of making a sensor comprises: forming a slurry comprising a metal oxide, a binder, an acetate, and a reducing material, applying the slurry to at least a portion of a sensing element comprising two electrodes with an electrolyte disposed therebetween, and calcining the slurry to form a protective coating. In one embodiment, a gas sensor, comprises: a sensing element comprising a sensing electrode and a reference electrode having an electrolyte disposed therebetween, and a protective coating disposed over the sensing electrode, wherein the protective coating comprises aluminum oxide, an alpha alumina and about 2 wt % to about 15 wt % solid solution, based upon the total weight of the protective coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.