Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Influence of the solid particle size on the properties of RuO2-based thick film resistors

Einfluß der Korngröße der Feststoffe auf die Eigenschaften von RuO2-Dickschichtwiderständen
: Kretzschmar, C.; Otschik, P.; Eichler, K.

Deutsche Gesellschaft für Materialkunde e.V. -DGM-, Oberursel:
PTM '93. Materials by Powder Technology. Proceedings
Oberursel: DGM-Informationsgesellschaft, 1993
ISBN: 3-88355-191-0
International Conference on Materials by Powder Technology <1993, Dresden>
Fraunhofer IKTS ()
aluminium nitride; Aluminiumnitrid; Dickschichttechnik; Glas; Glass; paste; resistor; ruthenium dioxide; Rutheniumdioxid; thick films; Widerstand

RuO2-based thick film pastes with 'non-reducible' glass (without lead oxide) can also react with AlN during firing. In the presence of glass RuO2 can be oxidized by AlN and the resistor layers bubble. To minimize this reaction respectivily to avoid the blistering the resistor pastes contain above mentioned glass with higher viscosity and inert components. The powder properties influence the porosity, the electrical behaviour and the stability of the resistors. The correlation between particle size and resistivity can be explained by the chain and ring model of conductive pathes. Because of the high glass viscosity during firing the interaction between glass and RuO2 is very small and therefore hardly influenses the conduction mechanism.