Alumina Substrates
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Protein Removal from Natural Rubber Latex with Fe3O4@Al2O3 Nanoparticle
The presence of protein in the natural rubber latex for the medical device manufacture seems to be the most considered compound due to its allergic effect. Magnetic coated alumina (Fe3O4@Al2O3) has been known as an adsorbent for organic substrates due to its performance through physical and/or chemical interaction. In the current study, we tried to figure ou
J. Braz. Chem. Soc.. Publicado em: 2021-02
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2. Imidazolium-based Ionic Liquids Impregnated in Silica and Alumina Supports for CO2 Capture
Ionic liquids (ILs) physical immobilization in solid materials is a key strategy for developing efficient and low cost CO2 capture processes. In this work, two porous commercial substrates with different characteristics (silica and alumina) were impregnated with ILs by physical wet method. Imidazolium based IL combined with [Br]- and [Tf2N]- anions were used
Mat. Res.. Publicado em: 11/11/2019
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3. Study of the metallurgical bond between 316 steel substrates and NiCrAlY coating sprayed by HVOF and irradiated with a low power CO2 laser
RESUMO Considerando a importância do desenvolvimento de novos materiais ao longo dos últimos anos; os pesquisadores vêm estudando soluções eficazes através do uso de revestimentos de alta dureza para aplicação em ferramentas de corte e matrizes de conformação. Revestimentos de carboneto de tungstênio (WC) são um dos mais utilizados em sistemas de
Matéria (Rio J.). Publicado em: 16/09/2019
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4. Production and Characterization of a Silica-Alumina Membrane Using Novel Tubular Freeze-Cast Substrates
Development of new ceramic membranes has recently grown due to its superior thermal and mechanical stability. An interesting approach to manufacture asymmetric membranes is the production of aligned pore structure by the freeze-casting method. The lack of studies involving membrane production with tubular freeze-cast substrates warrants more research. In thi
Mat. Res.. Publicado em: 11/02/2019
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5. Films Deposited from Reactive Sputtering of Aluminum Acetylacetonate Under Low Energy Ion Bombardment
Films were deposited from aluminum acetylacetonate (Al(acac)3) using a methodology involving reactive sputtering and low energy ion bombardment. The plasma was generated by the application of radiofrequency power to the powder containing electrode and simultaneously, negative pulses were supplied to the electrode where the substrates were attached. It was in
Mat. Res.. Publicado em: 10/04/2017
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6. Abrasive blasting contamination in Super Duplex and carbon steels - a quantification approach by rietveld analysis
A methodology for quantifying the contamination after abrasive blasting by Aluminum Oxide and Martensitic Carbon Steel particles in Super Duplex and Carbon Steel substrates has been developed. The method consisted of performing x-ray diffraction in the blasted steel substrates and calculating the particle contamination using Rietveld Quantitative Method. In
Mat. Res.. Publicado em: 2014-10
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7. Caracterização de vidros niobofosfatos para aplicação em selagem em célula a combústivel de óxido sólido / Characterization of niobophosphate glasses for solid oxide fuel cell (SOFC) sealing
Solid oxide fuel cells (SOFC) are devices which generate d.c. power by the oxidation of hydrogen molecules. These devices can have a multilayer plane design containing a cathode, an anode, a solid electrolyte, and a sealing material. The sealing, which is the subject of this study, has to be chemically stable at relatively SOFC operational condition in oxi-r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/03/2010
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8. Projeto conceitual e construção de um protótipo de uma minimáquina para o corte de substratos de Alumina / Conceptual project and construction of a mini dicing prototy to cut Alumina substrate
This work studies the dicing process of ceramic parts and proposes a project strategy to concept and take decisions about configuration for a preliminary project and the construction of a dicing saw or dicing machine prototype. The technology used by modern electronic components is based on narrow and thin ceramic or silicon. One of the techniques to obtain
Publicado em: 2009
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9. Desenvolvimento de um sensor eletroquímico planar modificado com 1-2 Diaminobenzeno (DAB) para monitoração de nitrito por FIA-automatizada. / Development of a planar electrochemical sensor modified with 1-2 Diaminobenzene (DAB) for nitrite measuring by automatic FIA.
A presente dissertação de mestrado tem o propósito de relatar o desenvolvimento de um sensor planar eletroquímico com três eletrodos para o monitoramento de nitrito e seus interferentes (ácido úrico, ácido ascórbico e paracetamol). Para tal, no procedimento experimental é descrito o desenvolvimento do aparato extracorpóreo (mini-bomba compressora,
Publicado em: 2009
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10. A nanotecnologia aplicada à prevenção da corrosão : o uso de nanocerâmicos de alumina e zircônia
This work presents the study of a nanoceramic material, based on a matrix of Al2O3 with addition of ZrO2 15% in mol, as corrosion inhibitor in metallic substrates: steel carbon, steel galvanized minimized and aluminum. The characterization of the formed oxides was carried out by the study of Fourier´s Transformed Infrared Spectroscopy (FTIR) and Ray X diffr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/11/2008
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11. Capacitive microsensor for evaluation of the quality of automotive fuels. / Micro-sensor capacitivo para avaliação da qualidade de combustíveis automotivos.
This work proposes a capacitive sensor with interdigitated electrodes in order to evaluate the quality of automotive fuel. Interdigitated electrodes have some interesting features for this type of sensor. Among them, they increase the capacitance by having several capacitors in parallel, and by having a structure feasible to be manufactured by conventional m
Publicado em: 2008
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12. TRATAMENTO ELETRO TÉRMICO DE SUBSTRATOS DIELÉTRICOS PARA CIRCUITOS PLANARES DE MICROONDAS / ELECTRO-THERMAL TREATMENT OF DIELECTRIC SUBSTRATES FOR PLANAR MICROWAVE CIRCUITS
Diversos fatores têm atraído esforços para o desenvolvimento de novas estruturas para circuitos planares de microondas. Várias propostas são encontradas na literatura técnica, explorando diferentes formas de miniaturização dos circuitos, melhoria de eficiência de acoplamento, aumento de banda ou redução de perdas. Entre elas, encontra-se a utiliza
Publicado em: 2008