Method for forming a potential hydrocarbon sensor with low sensitivity to methane and CO

US6656336B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Rangachary Mukundan · Los Alamos, US
• Eric L. Brosha · Los Alamos, US
• Fernando Garzon · Albuquerque, US

Key dates

• Filing date: May 30, 2002
• Grant date: Dec 2, 2003
• Expiry date: May 30, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/4074
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A hydrocarbon sensor is formed with an electrolyte body having a first electrolyte surface with a reference electrode depending therefrom and a metal oxide electrode body contained within the electrolyte body and having a first electrode surface coplanar with the first electrolyte surface. The sensor was formed by forming a sintered metal-oxide electrode body and placing the metal-oxide electrode body within an electrolyte powder. The electrolyte powder with the metal-oxide electrode body was pressed to form a pressed electrolyte body containing the metal-oxide electrode body. The electrolyte was removed from an electrolyte surface above the metal-oxide electrode body to expose a metal-oxide electrode surface that is coplanar with the electrolyte surface. The electrolyte body and the metal-oxide electrode body were then sintered to form the hydrocarbon sensor.