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Óxido de zinco dopado com gálio preparado pelo método Pechini
(Editora Unesp, 2002-01-01)
Óxido de zinco dopado com gálio (ZnO:Ga) foi preparado pelo método Pechini a partir de citrato de zinco e hidróxido de gálio. Utilizsando este método, foi possível obter ZnO:Ga cristalino pela calcinação do precursor ...
Influence of the concentration of Sb2O3 and the viscosity of the precursor solution on the electrical and optical properties of SnO2 thin films produced by the Pechini method
(Elsevier B.V., 2002-02-22)
SnO2:Sb multi-layer coatings were prepared by the Pechini method. An investigation was made of the influence of the concentration of Sb2O3 and the viscosity of the precursor solution on the electrical and optical properties ...
Influência do oxalato de amônio na formação do precursor columbita obtido pelo método Pechini
(Associação Brasileira de Cerâmica, 1999-06-01)
A rota da columbita para síntese do PMN (Pb3MgNb2O9) é um processo que permite reduzir significativamente a formação de fases secundárias. O método Pechini, utilizado na síntese da columbita, permite perfeita homogeneidade ...
Synthesis and characterization of antimony tartrate for ceramic precursors
(Consultants Bureau, 1999-11-01)
Synthesis and characterization of antimony tartrate used as a precursor of ceramic powders obtained by Pechini's method were carried out. Antimony tartrate was chosen as a substitute for the antimony citrate commonly used ...
Synthesis and characterization of PLZT (9/65/35) by the Pechini method and partial oxalate
(Elsevier B.V., 1998-05-01)
ZrTiO4 (ZT), obtained by the Pechini method, was used as precursor for obtaining PLZT (lead lanthanum zirconium titanate). An aqueous solution of oxalic acid was prepared with particles of ZT, Pb(NO3)(2) and La2O3. After ...
Estudio de PMN cerámico dopado con KNbO3 y LiNbO 3 sintetizado por Pechini
(2002-12-01)
PMN belongs to a special class of materials named relaxor ferroelectrics. It has high volumetric efficiency due to its high dielectric constant, which makes it in a perfect material for application in multilayer capacitors. ...
Use of impedance spectroscopy in the study of the effect of Cr concentration on the electrical properties of SnO2-based ceramics
(Trans Tech Publications Ltd, 2005-01-01)
This paper reports a study of influence of Cr concentration on the electrical properties and microstructure of SnO2-based powders doped with Mn and Nb, prepared by an organic route (Pechini method). All the samples were ...
Analysis of Ca-PZT powder obtained by the Pechini and partial oxalate methods
(Associação Brasileira de Cerâmica, 2008-03-01)
Pós de Ca-Pb(Zr,Ti)O3 (Ca-PZT) foram preparados por um método combinado que consiste na técnica Pechini para as partículas intermediárias de ZrTiO4 (ZT) e a rota do oxalato para o pó final. Os produtos intermediário e final ...
Barium strontium titanate powder obtained by polymeric precursor method
(Elsevier B.V., 2003-03-01)
Pure barium strontium titanate powder, with Ba/Sr ratio of 80/20 was prepared by the polymeric precursor method (also called Pechini process). The powder was obtained after a calcination at 800 degreesC for 8 h and ...
Influência do método de síntese na obtenção de pós de Na2TiSiO5
(Associação Brasileira de Cerâmica, 2005-09-01)
Este trabalho apresenta um estudo sistemático sobre a síntese e caracterização de pós de Na2TiSiO5. Foram estudadas as propriedades estruturais e morfológicas dos pós por intermédio de difração de raios X, espectroscopia ...