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FP5

PIRAMID Résumé de rapport

Project ID: G5RD-CT-2001-00456
Financé au titre de: FP5-GROWTH
Pays: Denmark

Low sintering composition for thick films

The major challenge in the preparation of piezoceramic thick films by screen printing is to obtain a dense film with sufficient piezoelectric properties, without damaging the substrate during sintering. Especially the commercially interesting substrate materials silicon and stainless steel are challenging, because they require a sintering temperature below 900ºC. This should be compared with typical sintering temperatures of PZT-based ceramics above 1150ºC. In order to obtain such low sintering temperatures, the most relevant solution is to add a sintering aid, and within PIRAMID a new low-sintering composition has been developed.

This composition, which is based on Ferroperm¿s commercial Pz27, can be sintered to a good density at only 850ºC, and a thickness-coupling factor of 38% has been obtained on bulk discs. Thick films of this composition have been prepared by screen-printing, but the characterisation of these is still in progress.

Reported by

FERROPERM PIEZOCERAMICS A/S
Hejreskovvej, 18A
KVISTGAARD
Denmark
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