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Itens para a visualização no momento 31-40 of 46
Processamento e caracterização de condutores de íons O2- a partir de cerâmicas BIMEVOX.
(Universidade Federal de São Carlos, 2005-11-11)
In this work, the processing of BIMEVOX family ceramics (ME-doped bismuth vanadate, ME =Cu2+, Fe3+ and Ti4+), obtained by precursor oxides fusion method was studied. The resulting powders were valued by X ray diffraction, ...
Determinação da energia de fratura em materiais cerâmicos em altas temperaturas.
(Universidade Federal de São Carlos, 2005-03-11)
In this work, the main objective was to determine the energy of fracture in
ceramic materials, focused on refractories, at high temperatures and to inquire
the interference of the creep on this measurement. Therefore, ...
Processamento viscoplástico e conformação cerâmica por rolos a frio a partir de suspensões concentradas de alumina.
(Universidade Federal de São Carlos, 2005-07-27)
Plastic forming, followed by roll-pressing, allows to shape ceramic bodies with thickness that are useful for electronic and pavement ceramics. This work introduces an alternative route to processing ceramic plastic mixes. ...
Investigação das características de superplasticidade de um aço do sistema Fe-Mn-Al
(Universidade Federal de São Carlos, 2008-02-29)
The alloys of Fe-Mn-Al system have been rather studied in last few years indicating good potential for application, with the benefit of exhibiting 10 to 15% less density, coupled to good performance related to its mechanical ...
Estudo do transporte de íons Li+ em híbrido orgânico-inorgânico (SPHP) e nanocompósito (NHP) e seu desempenho em dispositivos eletrocrômicos.
(Universidade Federal de São Carlos, 2006-08-25)
The main goal of the present work is to describe the lithium ion transport
mechanism in a hybrid (SPHP) and nanocomposite (NHP) polyelectrolyte based
on complex conductivity analysis as a function of temperature. The ...
Caracterização elétrica de eletrólitos baseados em céria Nano e microcristalinos para pilhas a combustível
(Universidade Federal de São Carlos, 2008-09-16)
Fuel cells are considered the most promising way for generating electrical energy in a near future. The economic fuel cells viability is directly related to the reduction of its operating temperature which is related to ...
Eletrólitos mono e multicamadas de céria e zircônia preparados por colagem de fita
(Universidade Federal de São Carlos, 2009-09-03)
In this work it was investigated bi-layer electrolytes prepared by the tape casting technique. These electrolytes were composed of one layer of 10 mol% gadolinia doped ceria (CDG) and another one of 8 mol% yttria-stabilized ...
Problemas correntes sobre nucleação, crescimento de cristais e difusão em vidros.
(Universidade Federal de São Carlos, 2004-12-10)
Efeito da calcinação da magnésia precipitada sobre o processamento de cimentos de fosfato de magnésio.
(Universidade Federal de São Carlos, 2004-12-20)
It is great the interest for materials synthesized at room temperature
because they represent an alternative for the current problems of energy. The
class of magnesia phosphate cements belongs to this group, being ...
Cristalização e sinterização de bio vidros do sistema Na2O-CaO-SiO2-P2O5
(Universidade Federal de São Carlos, 2001-03-30)
The objective of this work was to study crystallisation and sintering of Bio-glasses of Na2O CaO SiO2 P2O5 aiming at the improvement of the mechanical properties. In order to study the development of glass-ceramics in this ...