Search Results - "Morelli, M.R"

Use of microwave oven in the calcination of MgO and effect on the properties of magnesium phosphate cement by Ribeiro, D.V., Paula, G.R., Morelli, M.R.

“…•Microwave calcination of MgO and effect of this calcination method is evaluated.•Doped and undoped MgO powders were prepared.•MgO powders were calcined at…”
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Effects of Additivation During MgO Calcination on Properties of MgO Powders and Magnesium Phosphate Cements by Ribeiro, D.V., Paula, G.R., Morelli, M.R.

“…Magnesium phosphate cement are materials prepared by reacting magnesium oxide with water-soluble phosphates such as mono-ammonium dihydrogen phosphate, which…”
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Effect of Fe2O3 content on the electrical resistivity of aluminous porcelain applied to electrical insulators by Piva, D.H., Piva, R.H., Venturini, J., Ramon, J., Caldas, V., Morelli, M.R., Bergmann, C.P.

“…In general, the presence of Fe2O3 is claimed to reduce the insulating behavior of electrical porcelains, even if a rigorous proof has not yet been reported…”
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Synthesis, microstructure and magnetic properties of Ni–Zn ferrites by Costa, A.C.F.M., Tortella, E., Morelli, M.R., Kiminami, R.H.G.A.

“…Ni–Zn ferrite powders with a nominal composition of Ni 0.5Zn 0.5Fe 2O 4 were prepared by combustion synthesis, using urea as fuel. The large quantity of gas…”
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Improving physical properties of cubic InO1.5-stabilized zirconia by alloying with MoO3 by Piva, R.H., Piva, D.H., Montedo, O.R.K., Morelli, M.R.

“…InO1.5-stabilized zirconia (InSZ) possess high ionic conductivity at intermediate temperatures and thus it is a potential candidate for use as electrolyte for…”
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Azeotropic distillation, ethanol washing, and freeze drying on coprecipitated gels for production of high surface area 3Y–TZP and 8YSZ powders: A comparative study by Piva, R.H., Piva, D.H., Pierri, J.J., Montedo, O.R.K., Morelli, M.R.

“…Coprecipitation is a well-established method for synthesizing yttria-stabilized zirconia (YSZ); however, the hard agglomerates formed during the drying stage…”
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Thermal stability and phase transformation in fully indium oxide (InO1.5) stabilized zirconia by Piva, R.H., Piva, D.H., Morelli, M.R.

“…Indium oxide (InO1.5) stabilized zirconia (InSZ) is an attractive material as electrolyte, or electrode, in solid oxide fuel cells (SOFCs), and as corrosion…”
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Antibacterial and photocatalytic activity of ZnO nanoparticles from Zn(OH)2 dehydrated by azeotropic distillation, freeze drying, and ethanol washing by Piva, D.H., Piva, R.H., Rocha, M.C., Dias, J.A., Montedo, O.R.K., Malavazi, I., Morelli, M.R.

“…[Display omitted] •Zn(OH)2 was synthesized by precipitation.•Four different dehydration procedures were used to prepare ZnO nanoparticles.•Azeotropic…”
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Effect of red mud addition on the corrosion parameters of reinforced concrete evaluated by electrochemical methods by Ribeiro, D.V., Labrincha, J.A., Morelli, M.R.

“…Red mud, the main waste generated in aluminum and alumina production from bauxite ore by the Bayer process, is considered "hazardous" due to its high pH. The…”
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Analysis of chloride diffusivity in concrete containing red mud by Ribeiro, D.V., Labrincha, J.A., Morelli, M.R.

“…Red mud is a solid waste produced in the alumina production process and, due to its high pH, is classified as hazardous. Its incorporation in concrete…”
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Effect of reactive silica sources on the properties of Na-metakaolin-based geopolymer binder by Bezerra, B.P., Morelli, M.R., Luz, A.P.

“…•Colloidal silica combined with NaOH resulted in a very reactive activating solution.•The NaOH-CS activator enhanced the mechanical and thermal stability of…”
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Effect of boric acid content on the properties of magnesium phosphate cement by Ribeiro, D.V., Paula, G.R., Morelli, M.R.

“…•Effect of boric acid (BA) content on the properties of magnesium phosphate cement was evaluated.•Specimens were molded with different BA contents using MgO…”
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Effect of boric acid content on the properties of magnesium phosphate cement by Ribeiro, D.V, Paula, G.R, Morelli, M.R

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Physico-mechanical properties of metakaolin and diatomite-based geopolymers by Coelho, T.P.P., Bezerra, B.P., Verza, J.R., Luz, A.P., Morelli, M.R.

“…•Metakaolin and calcinated diatomite were investigated as precursors.•Sodium silicate or colloidal silica was used to prepare the activating solutions.•The use…”
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Combustion synthesized ZnO powders for varistor ceramics by Sousa, V.C., Segadães, A.M., Morelli, M.R., Kiminami, R.H.G.A.

“…Commercial ZnO varistor ceramics are multicomponent, with minor amounts of added oxides that play important roles, both in the strict electrical sense and for…”
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Synthesis of BSCF perovskites using a microwave-assisted combustion method by Nuernberg, R.B., Morelli, M.R.

“…Ba0.5Sr0.5Co0.8Fe0.2O3−Δ (BSCF) perovskite-type oxide was synthesized using a microwave-assisted combustion method. Following about 10min of exposure to…”
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Effect of the addition of red mud on the corrosion parameters of reinforced concrete by Ribeiro, D.V., Labrincha, J.A., Morelli, M.R.

“…Red mud, the main waste generated in aluminum and alumina production by the Bayer process, is considered “hazardous” due to its high pH. The characteristic of…”
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Thermal, Structural and Morphological Characterisation of Freeze-dried Copper(II) Acetate Monohydrate and its Solid Decomposition Products by Bellini, J.V., Machado, R., Morelli, M.R., Kiminami, R.H.G.A.

“…In the present study the thermal decomposition of a freeze-dried copper(II) acetate monohydrate powder, (CH3COO)2Cu.H2O, (FDCuAcH2O), was analysed by a…”
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Comparison of two different synthesis methods of perovskites, SrCo0.5FeO3 type, aiming at evaluating their use as membranes for partial oxidation of methane by Noronha, F.B., Mattos, L.V., Souza, H.P. de, Morelli, M.R., Passos, F.B., Greca, Maria Conceição

“…In this work two different synthesis methods of perovskites, SrCo0.5FeO3, were compared: combustion synthesis and oxides mixture aiming at evaluating their use…”
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Magnetic and structural properties of NiFe2O4 ferrite nanopowder doped with Zn2 by Costa, A.C.F.M., Silva, V.J., Cornejo, D.R., Morelli, M.R., Kiminami, R.H.G.A., Gama, L.

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