Patent · US Expired

Gas sensors and method of making such sensors

US4257863A · kind A · utility

14Cited by
5References
12Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJun 12, 1979
Grant dateMar 24, 1981
Priority date—
Expiry dateJun 12, 1999

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N27/4075
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

This specification discloses an improved electrochemical gas sensor comprising a closed end stabilized zirconia tube to which a porous layer of powdered zirconia is applied so as to be intimately bonded to the tube, and a layer of porous electrode material which in the use of the sensor is exposed to the gases to be analyzed. The provision of the porous layer of powdered zirconia substantially improves the bonding of the outer electrode layer to the zirconia tube. In the preferred embodiment a further powdered zirconia layer is applied to the electrode to protect the electrode and to inhibit chemical contamination of the zirconia/electrode interface of the sensor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.