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Mostrando ítems 11-20 de 37
Estudo da influência dos óxidos de Mn, Co e Cr nas propriedades varistoras do sistema SnO2Nb2O5.
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2000-12-01)
Aiming at obtaining SnO2 based varistor systems with a high degree of non linearity, new varistor compositions were studied, by means of doping the known SnO2.Nb2O5.CoO system with Cr2O3 and MnO2, as well as changing the ...
Density improvement of the sol-gel dip-coated SnO2 films by chemical surface modification
(Elsevier B.V., 2005-01-01)
We compare the effect of organic (Tiron (R)) and inorganic (Mn(11)) additives on the low temperature (< 600 degrees C) densification of the sol-gel dip-coated SnO2 films. The structural and compositional properties of the ...
Density improvement of the sol-gel dip-coated SnO2 films by chemical surface modification
(Elsevier B.V., 2005-01-01)
We compare the effect of organic (Tiron (R)) and inorganic (Mn(11)) additives on the low temperature (< 600 degrees C) densification of the sol-gel dip-coated SnO2 films. The structural and compositional properties of the ...
Caracterização de sistemas varistores a base de SnO2-MnO2.
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM, 2002-08-02)
This work focussed on the effect of addition of Nb2O5 on the electrical and microestructural properties of SnO2-MnO2 based ceramics. It was also studied the effect of heat-treatments in a oxygen-rich atmosphere in these ...
Estudo das Propriedades Ópticas, Morfológicas e Magnéticas de Pontos Quânticos de CdTe e Cd1-xMnxTe em Matriz Vítrea
(Universidade Federal de UberlândiaBRPrograma de Pós-graduação em FísicaCiências Exatas e da TerraUFU, 2016)