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Ferroperm
Piezoceramics have a long-standing commitment to research &
development and collaborate extensively with universities in-
and outside Denmark. In connection with the R&D projects, Ferroperm have been involved in various publications. The publications can be sent to you free of charge. |
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![]() | Lead-Free Piezoelectric Ceramics Based on Alkaline Niobates |
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The market for piezoceramic components
is dominated by lead-based PZT materials containing more than
60 wt% lead. Since lead is highly toxic, it has become a great
concern how to eliminate the use of PZT by replacing it by non-harmful
materials while maintaining comparable piezoelectric properties.
This is the objective of the present project. Alkaline niobates
are proposed as alternative piezoceramic materials. Niobate ceramics
are known to be very difficult to densify fully. A combination
of optimised compositions, innovative powder synthesis and a
range of ceramic processing methods is proposed for obtaining
lead-free materials suitable for industrial applications. Three
end-users in the project will test the new materials in industrial
devices. Expected results: a material comparable to PZT, and
a high-temperature one with lower sensitivity. The project started in March 2001 and will end in February 2004. If you would like more information on the LEAF project please click here. |
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![]() | High-sensitivity novel PIezoceramics for advanced applications - textured, thick films and multilayer structures |
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For the
next device generation (e.g., micromotors, actuators, sensors),
classical PZT materials cannot satisfy the demands for a wide
variety of applications: exceptionally high piezoelectric coefficients,
high electromechanical coupling coefficients and high dielectric
permittivity. Relaxor-ferroelectric solid solutions are now considered
as the best candidates for these applications. Improved properties
of relaxor ceramics will be investigated through exploration
of phase diagrammes between relaxor materials; novel powder processing
such as controlled dispersion, sol-gel synthesis; control of
ceramic microstructure using new methods for preparing textured
ceramics by hot forging and casting. Advanced material will be
up-scaled and promoted in the European market through an end-users
group and two test vehicles, a sonar transducer and an inkjet
printer head, will be built. The project started in May 2001 and will run until October 2004. If you would like more information on the PIRAMID project please click here. |
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| Thematic network on Polar Electroceramics |
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The aim of the thematic network POLECER is to identify key areas for development within Polar Electroceramics, strategically important to European industry, co-ordinate R&D activities in this field, pursue efficient dissemination of their
results to industrial users and support implementation of emerging
technologies leading to new products. Our strategic goal is to
bring Europe into the forefront of technological development
and strengthen its competitiveness, both by means of innovative
products and by setting and promoting environmental standards
for industry. The POLECER Network will organise and support co-operation
between European regions incl. former Eastern Europe and stimulate
the exchange of young scientists from different countries. Due to their unique properties, the polar electroceramic materials covered by the POLECER network are an important part of several devices, used either actively as generators, motors, transformers and transducers etc. or passively as sensors, and therefore present in our everyday life. Piezoelectric and pyroelectric effects have been most commonly used. However, devices exploiting electrostrictive, electro-optical and photostrictive effects are either at the development stage or being considered. The most active electroceramic materials contain lead and identifying an equivalent lead-free replacement has until now proven very difficult despite years of research in Europe, USA and Japan. POLECER will invite projects dedicated to R&D activities within electroceramics to join the network and will co-ordinate the exchange of information between groups working within 5th Framework projects, EUREKA and COST. Also, national materials programmes such as British and German will be invited. CENELEC's Technical Committees within electroceramics will be invited to present their work at POLECER's annual workshops. The network administration will organise annual workshops to ensure the information flow within the network and special sessions at future European Electroceramics conferences for the information dissemination to others than participating projects. The POLECER network started in April 2001 and will continue at least until March 2005. You can get much more information on the network on the offical POLECER website. |
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Hejreskovvej 18A DK-3490 Kvistgård Tel.: +45 49 12 71 00; Fax: +45 49 13 81 88 e-mail: pz@ferroperm-piezo.com |
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