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Electrical relaxation in proton conductor composites based on (NH4)H2PO4/TiO2
(Springer Heidelberg, 2009-06-01)
We report on electrical relaxation measurements of (1-x)NH4H2PO4-xTiO(2) (x = 0.1) composites by admittance spectroscopy, in the 40-Hz-5-MHz frequency range and at temperatures between 303 and 563 K. Simultaneous thermal ...
Modeling two-phase ferroelectric composites by sequential laminates
(IOP Publishing, 2014-02)
Theoretical estimates are given for the overall dissipative response of two-phase ferroelectric composites with complex particulate microstructures under arbitrary loading histories. The ferroelectric behavior of the ...
Development of alpha-SiAlON-SiC ceramic composites by liquid phase sintering
(Elsevier B.V., 2007-01-01)
In this work, in situ alpha-SiAlON-SiC ceramic composites were obtained,by, liquid phase sintering, using SiC as reinforcement. Different beta-SiC powder contents (0-20 wt.%), were added to Si3N4-AlN-RE2O3. powder mixtures, ...
Influence of PZT insertion on Portland cement curing process and piezoelectric properties of 0–3 cement-based composites by impedance spectroscopy
(2020-03-30)
0–3 Cement-based piezoelectric composites were produced. It was verified that not only the piezoelectric properties of the composites, but also the influence of piezoelectric phase in the cement paste curing process. The ...
Processing, compatibilization and properties of ternary composites of Mater-Bi with polyolefins and hemp fibres
(Elsevier, 2011-09-16)
Ternary composites of a biodegradable thermoplastic matrix, Mater-Bi (MB), with various polyolefins (PP, HDPE and PS) and hemp fibres (H) were obtained by melt mixing and characterized by SEM, OM, DSC, TGA and tensile ...
Reactivity of BaTiO3-Ca10(PO4)6(OH)2 phases in composite materials for biomedical applications
(Elsevier, 2017-04)
In this work the reactivity of barium titanate (BT) and hydroxyapatite (HA) composites from commercial and synthesized powders was studied. Raman spectroscopy, X-ray diffraction and scanning electron microscopy were used ...
Effect of magnesium on the properties of LiNbO 3 thin films prepared from polymeric precursors
(2002-12-01)
The effect of magnesium addition on the phase formation, microstructure and electric and ferroelectric properties of LiNbO 3 thin films prepared through polymeric precursors was analyzed. By X ray diffraction no secondary ...
Effect of Physical Training on Body Composition in Brazilian Military
(2022-02-01)
The military are selected on the basis of physical standards and are regularly involved in strong physical activities, also related to particular sports training. The aims of the study were to analyze the effect of a 7-month ...
Physical properties of self-polarized PZT thin films at compositions around the morphotropic phase boundary
(Trans Tech Publications Ltd, 2014-01-01)
The physical properties of self-polarized PbZr1-xTixO3 thin films with no preferential orientation in a range of compositions 0.46 <= x <= 0.50 were investigated. Structural analysis revealed the coexistence of ...
Fabrication and creep properties of eutectic-composition Al2O3/YAG/YSZ sintered composites
(Elsevier LtdPE, 2021)
"Three-phase alumina/YAG/yttria-stabilized cubic zirconia (YSZ) composites were fabricated by a solid-state reaction route starting from commercial powders of Al2O3, Y2O3 and monoclinic ZrO2. The final phases Al2O3,
YAG ...