Heraeus Nexensos Gmbh

Christoph Nick

Stefan Dietmann

Tim Asmus

Karlheinz Wienand

The present invention relates to a screen-printing paste composition for producing an electrical conductor arrangement, which screen-printing paste composition comprises particulate noble metal, comprising platinum and palladium, metal oxides, and organic binders and/or solvents, the proportion of the metal oxides in the screen-printing paste composition being 5 to 15 wt. %, based on the total amount of platinum and metal oxides. Suitable screen-printing paste compositions can be processed to form composite products by means of application to a substrate, subsequent drying and baking, which composite products can be used, for example, in particle sensors or heating devices. The particle sensors and heating devices thus produced are characterized by improved adhesion to the substrate at high temperatures and by conductivity, and demonstrated very good reproducibility of the electrical resistance in different production batches.

Noble-metal pastes for screen-printed electrode structures

One aspect relates to a soot sensor for detecting electrically conductive and/or polarizable particles, including a substrate, an electrode layer that is formed on the substrate and that includes at least two spatially separated electrodes that engage into each other. At least one cover layer is formed on the side of the electrode layer facing away from the substrate. Multiple openings are formed in the cover layer, the openings at least partially exposing a surface of one electrode of the at least two electrodes.

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Gelnhausen, Germany

Christoph Nick