Method for making sensors, and sensors made therefrom

A method of making a sensor element (10) comprises: combining coarse aluminium oxide with fine aluminium oxide and a binder to form a mixture, milling the mixture to form a base slurry, mixing a supported catalyst with the base slurry and a fugitive material to form a final slurry, applying the slur...

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Bibliographische Detailangaben
Hauptverfasser:	VALDES, CARLOS A, DETWILER, ERIC J, MU, MINGNG, KIKUCHI, PAUL C
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	A method of making a sensor element (10) comprises: combining coarse aluminium oxide with fine aluminium oxide and a binder to form a mixture, milling the mixture to form a base slurry, mixing a supported catalyst with the base slurry and a fugitive material to form a final slurry, applying the slurry to a sensor element (10) precursor over at porous protective layer (40, 48) at least in an area opposite a sensing electrode (20), and calcining the sensor element (10) precursor to form a calcined sensor element (10) with a catalyzed coating over at least a portion of the porous protective layer (40, 48). The coarse aluminium oxide has a coarse agglomerate size and the fine aluminium oxide has a fine particle size less than the coarse agglomerate size.