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PIRAMID Résumé de rapport

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

Up-scaling (PMN-PT ceramics)

This result is linked with the results in WP2 concerning new powder compositions. The new doped PMN-PT composition developed within PIRAMID has been upscaled by Ferroperm and is now ready for production in an industrial scale.

The largest batch produced so far is 10 kg and the process used can yield batches up to 100 kg without further modifications. The preliminary results are quite promising, very high relative permittivities (free:5000) and low dielectric loss (tan delta < 0.01) and a thickness coupling coefficient k_t of - 0.46.

When all the relevant properties of the doped PMN-PT produced in industrial scale have been measured and compared to those of similar materials (e.g., Pz54, the new doped PNNZT mentioned elsewhere), the commercial potential of this composition will be assessed in more detail. It is expected to become a useful alternative to Pz54 for a number of applications (ultrasonic transducers for high-intensity focussed ultrasound (HIFU), medical imaging and underwater acoustics etc.), especially those requiring very high permittivity and not too high Curie point.

In case of sufficient customer interest, it will be marketed by Ferroperm Piezoceramics in the form of bulk ceramics parts.


Erling RINGGAARD, (R&D Manager)
Tél.: +45-49127100
Fax: +45-49138188