Electrochemical measuring sensor and method for producing an electrochemical measuring sensor

US5885429A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Karl-Hermann Friese · Leonberg, DE
• Werner Gruenwald · Gerlingen, DE
• Kurt Schmid · Ditzingen, DE
• Claudio De La Prieta · Stuttgart, DE
• Gerhard Schneider · Kirkland, US
• Hans-Joerg Renz · Echterdingen, DE
• Harald Neumann · Lambach, DE
• Uwe Glanz · Asperg, DE
• Stefan Kuschel · Stahnsdorf, DE
• Ralf Haug · Leonberg, DE
• Manfred Moser · Dachau, DE
• Kurt Bayha · Oberriexingen, DE
• Annette Seibold · Rutesheim, DE
• Carmen Schmiedel · Marbach am Neckar, DE
• Reiner Schuetz · Ditzingen, DE

Key dates

• Filing date: Aug 8, 1997
• Grant date: Mar 23, 1999
• Expiry date: Aug 8, 2017

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/4075
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An electrochemical measuring sensor having a solid electrolyte, a first electrode exposed to a gas to be measured and a second electrode exposed to a reference gas, with the electrodes preferably being arranged on opposite sides of the solid electrolyte. At least one of the electrodes (16, 20) is provided with a contouring (24) on its side (22) that is exposed to the gas to be measured or to the reference gas, with the contouring being a trench-shaped groove (26) embossed into the surface of the electrode such that the electrode is pressed into the adjacent solid electrolyte in the region of the groove. According to the method, the embossing is done while the electrode and the solid electrolyte are in the non-sintered state, and the sensor is subsequently sintered.