UChicago Argonne, LLC

John V Spirig

Dileep Singh

Prabir K Dutta

Jules L Routbort

Sheikh A Akbar

Ramamoorthy Ramasamy

Jiun Chan Yang

A method and an article of an electrically conductive ceramic interconnect bonded to a compatible ceramic housing for an oxygen partial pressure sensor system. The interconnect includes a LaSrAlMnO(LSAM) having a stoichiometry enabling good electrical conductivity at high temperatures and the LSAM also bonded to a yttria stabilized zirconia forming a stable and durable seal.

Electronically conducting ceramic electron conductor material and the process for producing an air-tight seal in an oxygen sensor with an internal reference

A compact oxygen sensor is provided, comprising a mixture of metal and metal oxide an enclosure containing said mixture, said enclosure capable of isolating said mixture from an environment external of said enclosure, and a first wire having a first end residing within the enclosure and having a second end exposed to the environment. Also provided is a method for the fabrication of an oxygen sensor, the method comprising confining a metal-metal oxide solid mixture to a container which consists of a single material permeable to oxygen ions, supplying an electrical conductor having a first end and a second end, whereby the first end resides inside the container as a reference (PO), and the second end resides outside the container in the atmosphere where oxygen partial pressure (PO)is to be measured, and sealing the container with additional single material such that grain boundary sliding occurs between grains of the single material and grains of the additional single material.

High-temperature potentiometric oxygen sensor with internal reference

A bifunctional total NOand Osensor assembly with an internal reference for high temperature sensing. Two electrochemical total NO(NO+NO) measuring systems and method were coupled with a metal/metal oxide internal oxygen reference to detect Oand NOsimultaneously in a combustion environment using a single sensor. A Pd/PdO-containing reference chamber was sealed within a stabilized zirconia superstructure by a high pressure/temperature bonding method. An amperometric and potentiometric NOsensor assembly was built on the outside of the Pd/PdO chamber. Pt-loaded zeolite Y was used to obtain total NOcapacity and also to cover the Pt electrodes for detecting oxygen in the presence of NO.

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Somerset, NJ, United States of America

John V Spirig