Manufacture of inert, catalytic or gas-sensitive ceramic layers for gas sensors

US5279855A · kind A · utility

Assignee

• Roth-Technik GmbH & Co. Forschung Fur-Automobil-Und Umwelttechnik · DE

Inventors

• Edelbert Hafele · Karlsruhe, DE
• Karl-Heinz Hardtl · Hagenbach, DE
• Andreas Müller · Wadgassen, DE
• Ulrich Schonauer · Karlsruhe, DE

Key dates

• Filing date: Jul 1, 1991
• Grant date: Jan 18, 1994
• Expiry date: Jul 1, 2011

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/16
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention concerns a process for manufacturing inert, catalytic or gas-sensitve ceramic layers for gas sensors which comprises coating an uncoated insulative substrate with a layer of paste composed of a powdered semiconductor material of SrTiO.sub.3 and an organic paste material having a thickness of 1 to 100 um and then subjecting the coated substrate to a three phase thermal treatment.