Oxygen sensor and a process for production thereof
US5518603A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1993 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Dec 23, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4073
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An oxygen concentration detecting device has a solid electrolyte made of a partially stabilized zirconia on one face of which is formed a measuring electrode exposed to a gas to be measured and on the other face of which a standard electrode exposed to a standard gas. An oxygen concentration detecting device provided with a protecting layer covers the measuring electrode formed on the oxygen concentration detecting device on the face exposed to the gas to be measured, the protecting layer being made of a partially stabilized sintered material of a partially stabilized zirconia material having a specific surface area of not less than 3 m.sup.2 /g and not more than 6.4 m.sup.2 /g to which a divalent or trivalent metal oxide, such as yttria, is added.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.