Now showing items 1-10 of 25
Preparação dos eletrodos óxidos cerâmicos para aplicação em filmes finos do tipo Pb1-xCaxTiO3
(Universidade Federal de São Carlos, 2008-01-25)
In this work the compounds LaNiO3 (LNO) and La0,5Sr0,5CoO3-δ (LSCO) were synthesized for application as oxide electrodes in thin films and the compound Pb1-xCaxTiO3 (PCT10) was synthesized as a material with a ...
Caracterização microestrutural, morfológica e óptica de filmes anódicos de ZrO2
(Universidade Federal de São Carlos, 2007-12-17)
In this work, we described some of the anodic ZrO2 properties such as microstructure, morphology and luminescence. The microstructural analysis during the breakdown process reveals that the oxide nature is similar to those ...
Estudo da corrosão do aço ao carbono em meio de sulfeto
(Universidade Federal de São Carlos, 2009-09-08)
This work presents a study of the 1020 and 1040 carbon steel corrosion in aqueous solution containing dissolved H2S in order to investigate the effect of H2Saq and HSaq species. Some different electrolytes were used: acetic ...
Transporte de vapor de água e sorção de CO2 em filmes de polisulfona: efeito das variáveis de processamento e envelhecimento físico.
(Universidade Federal de São Carlos, 2004-08-31)
Water vapor transport properties and CO2 sorption were studied for bisphenol A Polysulfone films, PSF, prepared with different thickness via solvent casting and a compression molding. From the measurements of water vapor ...
Eletrossíntese, caracterização e testes de compósitos de polipirrol e poli(DMcT) sobre fibra de carbono como catodos de baterias secundárias e eletrodos de supercapacitores
(Universidade Federal de São Carlos, 2009-11-27)
In this work bilayered electrodes made of polypyrrole Ppy and poly(2,5-dimercapto-1,3,4-tiadiazol) poly(DMcT) were produced and characterized on carbon-fiber substrate. To do so, several aspects were investigated: ...
Síntese e caracterização a nível nanométrico da fase Li2(M) Ti308, M=Zn, Co e Ni pelo método Pechini.
(Universidade Federal de São Carlos, 2004-06-25)
The present work describes the preparation and characterization of the spinel phases Li2ZnTi3O8, Li2CoTi3O8 and Li2NiTi3O8 synthesized by the polymeric precursor method. Polycrystalline ceramic powders of high quality ...
O problema dos fenômenos de dirupção e de reação zonal no sistema Pb/PbSO4/H2SO4
(Universidade Federal de São Carlos, 2007-05-03)
Transporte e morfologia de esquemas de tintas epóxi poliamina equivalentes à base de solvente e água.
(Universidade Federal de São Carlos, 2003-07-21)
In the present work, anticorrosive properties of solvent borne and water based epoxy polyamine coatings were studied comparatively. First these studies were performed for the individual layers of these coatings, i.e., ...
Estudo da Influência do Sm e Er em Cerâmicas de PbTiO3.
(Universidade Federal de São Carlos, 2005-04-29)
In this work, it was obtained powders and thin films of (Pb1-xLnx)TiO3, Ln = Sm and Er, using a chemical method of synthesis, polymeric precursor method (Pechini). In this way, the synthesis conditions were optimized in ...
Estudo de pós cerâmicos de PbTiO3 utilizando-se o método dos precursores poliméricos.
(Universidade Federal de São Carlos, 2000-11-30)
THE STUDY OF PbTiO3 (PT) CERAMIC POWDERS USING THE POLYMERIC PRECURSOR METHOD was started by the preparation of a precursor solution of metallic cations. Citric acid was used as quelation agent and ethylene glycol as ...