Results 21 to 30 of about 6,175 (227)

Influência da adição de níquel na síntese do SrSnO3 Influence of nickel doping on the SrSnO3 synthesis

open access: yesCerâmica, 2008
Pós cerâmicos microestruturados de Sr1-xNi xSnO3 (x de 0 a 0,20) foram sintetizados com sucesso pelo método dos precursores poliméricos. Os precursores foram caracterizados por análise térmica.
M. R. Nascimento   +7 more
doaj   +1 more source

Synthesis and Structural Properties of Niobium Pentoxide Powders: A Comparative Study of the Growth Process [PDF]

open access: yesMaterials Research, 2016
Powders Nb2 O5 were prepared by two different synthesis method, Sol-Gel and polymeric precursors (Pechini). In the Pechini method before adding the citric acid in the process, four different solutions were used to get the samples. For Sol-gel method, two
Angela M. Raba   +2 more
doaj   +1 more source

Study of magnetic properties of NiZnCu ferrite synthesized by Pechini method and solid-state reactions

open access: yesAIP Advances, 2018
Ni-Zn-Cu ferrites are exhibiting excellent magnetic properties at large frequencies and are consequently produced as low-loss magnetic materials used for magnetic components in power electronics.
Gaëlla Frajer   +4 more
doaj   +1 more source

Adapted Pechini method to prepare DSA type electrodes of RuO2-ZrO2 doped with Sb2O5 over titanium plates

open access: yesMethodsX, 2018
This paper describes a thermal method to obtain metal oxides on a titanium substrate surface. This adapted Pechini method is a versatile, easy to handle and scalable technique to obtain electrodes for industrial uses, such as Dimensionally Stable Anodes (
Francisca A. Rodríguez   +2 more
doaj   +1 more source

Lanthanum ferromanganites thin films by sol–gel process. Influence of the organic/inorganic R ratio on the microstructural properties [PDF]

open access: yes, 2005
Strontium-substituted lanthanum ferromanganites, La0.8Sr0.2Mn1−yFeyO3+δ (y=0, 0.2, 0.5, 0.8, 1), LSMF2Y (Y=10y) for solid oxide fuel cell (SOFC) cathode applications have been synthetized by a polymeric sol–gel route and deposited on YSZ substrates by a ...
Ansart, Florence   +4 more
core   +2 more sources

Pós nanométricos de BaZrO3: preparação e caracterização de cerâmicas BaZrO3 nanometric powders: preparation and characterization of ceramics

open access: yesCerâmica, 2005
Cerâmicas de BaZrO3 foram produzidas a partir de pós sintetizados pelo método de Pechini modificado. Os pós apresentaram tamanho médio de partícula de ~130 nm e 100% de fase cristalina de BaZrO3 depois de tratados termicamente a 800 °C / 2h.
E. Antonelli   +2 more
doaj   +1 more source

Investigation of Graded La2NiO4+ Cathodes to Improve SOFC Electrochemical Performance [PDF]

open access: yes, 2010
Mixed ionic and electronic conducting MIEC oxides are promising materials for use as cathodes in solid oxide fuel cells SOFCs due to their enhanced electrocatalytic activity compared with electronic conducting oxides.
F. Ansart   +6 more
core   +2 more sources

Síntese e caracterização de espinélios à base de ferritas com gelatina como agente direcionador Synthesis and characterization of ferrite-base spinels with gelatin as directing agent

open access: yesCerâmica, 2011
As ferritas com estrutura tipo espinélio compreendem um grupo de materiais magnéticos muito bem estabelecidos. Contudo, melhoramentos e inovações continuam acontecendo visando novas aplicações e otimização das técnicas de preparação.
A. F. Costa   +4 more
doaj   +1 more source

Síntese e caracterização de nanopartículas de TiO2 Synthesis and characterization of TiO2 nanoparticles

open access: yesCerâmica, 2006
Vários métodos de síntese química têm sido desenvolvidos e utilizados na obtenção de pós para fabricação de membranas cerâmicas. Dentre os métodos alternativos utilizados em escala de laboratório, o método Pechini tem sido empregado com sucesso para a ...
A. C. F. M. Costa   +4 more
doaj   +1 more source

Using the design experiment RSM for the preparation of nanoparticles containing pyrazinamide, ethambutol and rifampin [PDF]

open access: yesشیمی کاربردی روز, 2018
In this study, three-component nanoparticles of iron, nickel and lithium were synthesized with two methods of combined technique (co-precipitation, hydrothermal) and pechini sol-gel.
Fariba Tadayon   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy