Now showing items 1-10 of 49543
Mechanism of phase formation in Pb(ZrxTi1-x)O3 synthesized by a partial oxalate method
The phase formation mechanism, as well as the morphotropic phase boundary, of lead zirconate titanate (PZT) processed by a partial oxalate method was investigated by simultaneous thermal analysis (TG-DTA) and by qualitative ...
Multiple interfaces in diffusional phase transitions in binary mesogen-nonmesogen mixtures undergoing metastable phase separations
(American Physical Society, 2012-07)
Theory and simulations of simultaneous chemical demixing and phase ordering are performed for a mixed order parameter system with an isotropic-isotropic (I-I) phase separation that is metastable with respect to an ...
A new three-phase transformer modeling for three-phase harmonic analysis in distribution systems
(Institute of Electrical and Electronics Engineers (IEEE), 2005-01-01)
This work presents a new three-phase transformer modeling suitable for simulations in Pspice environment, which until now represents the electrical characteristics of a real transformer. It is proposed the model comparison ...
Dispersed phase hold-up in a perforated rotating disc contactor (PRDC) using aqueous two-phase systems
(Soc Chemical Eng JapanBunkyo Ku TokyoJapão, 1998)
Completeness of beta-phase decomposition reaction in Cu-Al-Ag alloys
The completeness of beta-phase decomposition reaction in the Cu-11wt%Al-xwt%Ag alloys (x = 0, 1, 2, and 3) was studied using differential scanning calorimetry (DSC), X-ray diffractometry (XRD), and optical microscopy (OM). ...
Influence of phase transition on shock-induced spallation in nanocrystalline iron
(American Institute of Physics, 2015-11)
Intense shock waves may lead to spallation of the sample. Recent experiments show differences of shock spallation in iron depending on whether the samples underwent the pressure-induced bcc-hcp phase transformation or not. ...
Adsorption/immobilization of poly(methyloctylsiloxane) on silanized silicas
(Marcel Dekker IncNew YorkEUA, 2004)
New features of the morphotropic phase boundary in the PbZrO 3-PbTiO3 system: A Raman spectroscopy study
(Taylor & Francis Ltd, 2002-01-01)
In this work we present a Raman study of PbZr1-xTi xO3 ceramics with composition values close to the morphotropic phase boundary region. The analysis of the Raman spectra leads to the determination of the monoclinic phase ...
Thermal phase transition for some spin-boson models
In this work we study two different spin-boson models. Such models are generalizations of the Dicke model, it means they describe systems of N identical two-level atoms coupled to a single-mode quantized bosonic field, ...
Error analysis of phase detector based on Clarke transform and arctangent function in polluted grids
(Elsevier Science Sa, 2015-06)
Abstract Extracting phase information from a three-phase disturbed signal is a recurrent topic in power systems. The phase detector based on the Clarke transform and the arctangent function is a widely used technique to ...