Zobrazeno 1 - 10
of 25
pro vyhledávání: '"J. Paletto"'
Publikováno v:
Journal de Physique IV (Proceedings). 123:171-176
Interconnected Porous piezoelectric ceramics are fabricated over the range of porosity going from 25 % to more than 95 % starting from sintering of PZT-glucose mixtures. For a large porosity The ceramic has a cellular structure similar to that of a s
Publikováno v:
Journal of the European Ceramic Society. 15:759-768
Four kinds of zirconia powders are prepared in different ways. Their compaction and sintering behaviour are studied extensively. During compaction, the agglomerates or granules present in the powder are broken and/or undergo plastic deformation. The
Autor:
J.P. Deloume, Fernand Chassagneux, B. Durand, A. Daoudi, Gilbert Fantozzi, A. Samdi, J. Paletto, M. Taha
Publikováno v:
Journal of the European Ceramic Society. 14:131-141
Tetragonal stabilized zirconia samples, 3 mol % in Y 2 O 3 , are prepared by pyrolysis up to 900°C of gelatinous precursors formed by hydrolysis of aqueous solutions containing both zirconium and yttrium acetates. Such prepared powders are white, bu
Publikováno v:
Journal of the European Ceramic Society. 12:353-360
Yttria stabilized zirconia powders (3 mol% in Y2O3) were prepared by the drying and air-calcination of amorphous gelatinous precipitates obtained by hydrolysis of solutions containing both zirconium and yttrium acetates. After sintering in air at 150
Publikováno v:
Polymer. 32:1044-1048
Vinylidene fluoride/trifluoroethylene statistical copolymer is a ferroelectric system with one observable Curie transition (in the case of 70 30 mol % composition). Data obtained by mechanical spectrometry show that the loss angle varies weakly with
Publikováno v:
Journal de Chimie Physique. 88:2275-2280
Le but du travail est de fabriquer des composites a matrice polymere (copolymere de fluorure de vinylidene et trifluoroethylene 70 %-30 % en mole) charges de particules de ceramiques piezoelectriques (PbTiO3 ) pour l’utilisation dans les capteurs h
Publikováno v:
Ferroelectrics. 109:205-210
Lead Zirconate Titanate (PZT) presents several disadvantages when used as a sensor of hydrostatic pressure (hydrostatic piezoelectric coefficient dh=d33+2d31 and the voltage coefficients g33=d33/e, gh=dh/e are small). The purpose of this work is to f
Publikováno v:
Journal of Solid State Chemistry. 45:164-169
Resume Une etude systematique des materiaux de type PLZT dont la composition se situe au voisinage de la transition rhomboedrique-tetragonale a temperature ambiante a permis de montrer que les proprietes piezoelectriques de ces composes etaient compa
Publikováno v:
Journal of Physics E: Scientific Instruments. 11:1113-1116
To evaluate the energy involved in the setting up and switching of electrical polarisation in polar materials, a method, based on the comparison of the energy graphically plotted on an hysteresis cycle with that measured simultaneously in a different
Publikováno v:
Journal of Physics D: Applied Physics. 7:78-84
The anomalous behaviour of powdered barium titanate is confirmed by the use of the formula for mixtures. Systematic measurements of the dielectric properties of BaTiO3 have been done for two cases: embedded grains and fine-grained pressed powder. The