Results 71 to 80 of about 613 (99)

Cerâmica condutora à base de 'SN''O IND.2' obtida pelo método dos precursores poliméricos e sinterização por micro-ondas

, 2010
O presente trabalho consiste no estudo da viabilidade para a obtenção de cerâmicas densas de SnO2 com baixa resistividades, dopados com Zn2+, Nb5+ e Al3+.
Gasparotto, Gisane [UNESP]
core   +2 more sources

Propiedades magnéticas y espectroscopia mössbauer en compuestos perovskita doble Sr₂(Fe_1-xSc_x)ReO₆ (x = 0.05, 0.1)

Boletín de la Sociedad Española de Cerámica y Vidrio, 2003
We have synthesised by the modified Pechini method the following polycrystalline double perovskite samples: Sr2Fe1- xScxReO6 (x = 0.05, 0.1). They have been characterised by X-ray, magnetic measurements and Mössbauer spectrometry.
Plazaola, F., Barandiaran, J. M., Greneche, J. M., Gómez, I., Hernández, T.   +4 more
doaj  

In situ synthesis by microwave assisted Pechini method of lead-free composites (1-x)BaZr0,08Ti0,92O3/(x)CoFe2O4

, 2019
Currently, there is considerable interest in developing lead-free composites in the scientific area. This is occurs due to the growing demand for new multifunctional materials with potential technological applications.
Caminata, Laís Pacheco
core  

Síntese, estudo cinético e análise microestrutural do sistema cério-níquel obtido pelo método pechini

, 2008
The cerium oxide has a high potential for use in removing pollutants after combustion, removal of organic matter in waste water and the fuel-cell technology. The nickel oxide is an attractive material due to its excellent chemical
Chaves, Alexsandra Cristina
core  

Síntesis mediante química sol gel de compuestos Li_1+xMⁱⁱⁱ_xTi_2-x(PO₄)₃ con estructura tipo Nasicon. Estudio de la relación microestructura-propiedades eléctricas

Boletín de la Sociedad Española de Cerámica y Vidrio, 2010
Compounds of formula Li1+xMIIIxTi2-x(PO4)3 with MIII = Cr, Fe and x = 0 and 0.05 have been prepared at soft temperatures using the Pechini synthesis method, based on sol-gel chemistry.
Santamaría, J., Isasi-Marín, J., León, C., Pérez-Estébanez, M., Rivera-Calzada, A.   +4 more
doaj  

Catalyst synthesis by the Pechini method using glycerol as a chelating agent for the catalytic decomposition of methane

, 2018
The Pechini method is a methodology of catalyst synthesis that uses citric acid to form chelates with metal ions, which undergo polyesterification when heated with ethylene glycol.
Tenório, Nereu Victor Nazário
core  

Envelhecimento de pós de beta-alumina sintetizados pelo método dos precursores orgânicos

, 2014
Pós de beta-alumina preparados pelo método de Pechini foram caracterizados por difração de raios X, microscopia eletrônica de varredura, análise de superfície por adsorção de gás espectroscopia no infravermelho e análises ...
Caliman, L. B., Gouvea, Douglas
core  

Preparação de supercondutor de alta-Tc no sistema BSCCO com adição de Pb utilizando Método Pechini de síntese

, 2015
With high critical temperature superconducting discovered in the 80s, the studies of superconducting materials have intensified in an attempt to obtain materials with Tc increasing, above the temperature of liquid nitrogen (77 K).
Aguiar, Felipe Magalhães de [UNESP]
core  

OBTENCIÓN DE PRECURSORES CON TAMAÑO DE PARTÍCULA NANO Y MICROMÉTRICO PARA LA FABRICACIÓN DE MATERIALES CERÁMICOS CON PROPIEDADES ELÉCTRICAS NO LINEALES

Revista EIA
Se comparan resultados respecto al comportamiento eléctrico del material sinterizado, a partir de polvos precursores de materiales cerámicos con propiedades eléctricas no lineales, conocidos como varistores.
Eugenio Giraldo Tobón, Pablo Abad Mejía   +1 more
doaj  

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A high-performance ethanol gas sensor based on Ce-doped SnO2 nanomaterials prepared by the Pechini method

Materials Science in Semiconductor Processing, 2022
Yongchang Wang, Hairong Li, Lina Cai
exaly