Exploració per tema "Ceràmiques electròniques"
Ara es mostren els items 1-4 de 4
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Extrinsic contribution and instability properties in lead-based and lead-free piezoceramics
(2015-11-01)
Article
Accés obertPiezoceramic materials generally exhibit a notable instability of their functional properties when they work under real external conditions. This undesirable effect, known as nonlinear behavior, is mostly associated with ... -
Influence of extrinsic contribution on the macroscopic properties of hard and soft lead zirconate titanate ceramics
(Institute of Electrical and Electronics Engineers (IEEE), 2008-12)
Article
Accés obertIn this work, the contribution of the extrinsic effect to the macroscopic properties in soft and hard lead zirconate titanate ceramics is directly evaluated. Close to the room temperature, poled hard ceramics show an ... -
Tailoring the microstructure by a proper electric current control in flash sintering: The case of barium titanate
(Elsevier, 2022-10)
Article
Accés obertFlash sintering is arousing growing interest because high-density ceramics can be obtained at lower temperatures and shorter dwell times than conventional sintering. However, not only temperature and dwell times should be ... -
Unexpected dielectric response in lead zirconate titanate ceramics: The role of ferroelectric domain wall pinning effects
(2007-07)
Article
Accés obertTemperature dependent dielectric response has been measured in Pb(Zr1-xTix)O-3 ceramics. Samples of different compositions (x=0.40, 0.47, and 0.60), pure and doped with Nb-or Fe, were studied at temperatures between 15 and ...