Thermal shock resistant coated exhaust sensor

A sensor element includes a substrate (10) having a coating (31) on a portion of the substrate (10). The coating (31) is applied to the substrate (10) by dipping the portion of the substrate (10) into a slurry which includes a pulverized mineral and water, extracting the substrate (10) from the slur...

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Bibliographic Details
Main Authors KING, CHARLES S, CLYDE, ERIC P, SYMONS, WALTER T, KUISELL, RICHARD C, DAY, MICHAEL J
Format Patent
LanguageEnglish
French
German
Published 17.06.2015
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:A sensor element includes a substrate (10) having a coating (31) on a portion of the substrate (10). The coating (31) is applied to the substrate (10) by dipping the portion of the substrate (10) into a slurry which includes a pulverized mineral and water, extracting the substrate (10) from the slurry in a direction along an axis, drying the coated substrate (10), and firing the coated substrate (10) so as to promote densification of the mineral and adhesion of the mineral to the substrate (10). The coating (31) after firing has a minimum thickness of about 100 microns at every location around the periphery of a cross section through the substrate (10) taken in a plane normal to the axis. A method for making a coated sensor element is also disclosed.
Bibliography:Application Number: EP20140197168