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Journal articles
Piezoelectric properties of polymer/lead-free ceramic composites
Abstract : Thermoplastic/lead-free piezoelectric ceramic composite have been prepared. Sodium niobate (NaNbO3) has been chosen for its high Curie temperature. Moreover, it could be synthesized with two different morphologies: NaNbO3 nanowires (NN NW’s) and NaNbO3 particles (NNP’s). The filler has been dispersed in thermoplastic matrices with different dielectric permittivities eM: PA11 (εM = 2) and polyvinylidene fluoride (PVDF) ( εM = 10). Due to polarization conditions, only ceramic particles are poled. The piezoelectric coefficient (d33) has been measured in composites. The higher d33 is recorded in composites based on PA11 (d33 = 6.5 pC.N¡1 for 30 vol. % NN NW’s). The influence of the NN aspect ratio on PVDF/NN composites has been analysed: the higher d33 (d33 = 2.6 pC.N^-1 for 25 vol. %) is recorded in PVDF/NN P’s. The major interest of these hybrid lead-free piezoelectric composites is mild poling conditions, ductility and thermal stability of piezoelectric performances.
Cited literature [48 references]
https://hal.archives-ouvertes.fr/hal-01469215
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Thursday, February 23, 2017 - 4:26:03 PM
Last modification on : Friday, January 10, 2020 - 9:08:23 PM
Long-term archiving on: : Wednesday, May 24, 2017 - 12:34:27 PM
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Thursday, February 23, 2017 - 4:26:03 PM
Last modification on : Friday, January 10, 2020 - 9:08:23 PM
Long-term archiving on: : Wednesday, May 24, 2017 - 12:34:27 PM
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