Fast Firing
Mostrando 1-12 de 131 artigos, teses e dissertações.
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1. Use of Firewood Ash Waste in Electrical Siliceous Porcelain
The use of firewood ash waste for the production of electric porcelain can represent an important technological and environmental alternative for the final disposal of this abundant solid waste material. This work aims to study the effect of replacing of sodium feldspar (albite) for firewood ash waste in electrical siliceous porcelain formulation. The firewo
Mat. Res.. Publicado em: 05/08/2019
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2. Incorporation of Lead Containing TV Tube Glass Waste in Aluminous Porcelain
The aim of this work was to study the incorporation of lead containing TV tube glass waste as a method to provide alternative raw material for aluminous electrical porcelain. For this purpose, aluminous porcelain formulations containing up to 30 wt.% of TV tube glass waste as a replacement for traditional flux material (sodium feldspar) were pressed and fire
Mat. Res.. Publicado em: 21/09/2017
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3. Effect of the Cooling Rate on the Properties of Veneer Porcelain for Zirconia Dental Prosthesis
To solve chipping of veneer porcelain in zirconia dental prosthesis it has been studied different cooling rates in firing schedules to control residual stresses generated by differences in thermal properties between the ceramics. However, cooling rates may affect the porcelain, irrespectively of interaction with zirconia. This study analyzed the effect of co
Mat. Res.. Publicado em: 07/08/2017
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4. LZS/Al2O3 Glass-Ceramic Composites Sintered by Fast Firing
In this work, nanometric Al2O3 (1-5 vol.%) particles (13 nm, 100 m2/g) were added to a 19.58Li2O•11.10ZrO2•69.32SiO2 (mol%) (3.5 µm, 2.5 m2/g) parent glass-ceramic matrix to prepare composites with the purpose of studying the influence of Al2O3 on their structure, microstructure, mechanical, thermal and electrical properties when sintered by fast firing
Mat. Res.. Publicado em: 15/05/2017
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5. Síntese e caracterização de CaZrO3 e BaZrO3 nanoestruturados
In this work, nanostructured samples of barium zirconate (BaZrO3) and calcium zirconate (CaZrO3) were synthesized by the gel-combustion method, using glycine as fuel. The ceramic powders were calcined at 550 °C for 2 h and subsequently heat treated at 1350 °C for 10 min (fast-firing). The X-ray diffraction technique was employed to identify and characteriz
Quím. Nova. Publicado em: 2013
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6. Microwave fast sintering of submicrometer alumina
Commercially available alumina powder with high-purity submicrometer particle size and narrow particle size distribution was fully densified by a microwave hybrid fast firing technique. The alumina compacts were surrounded by susceptor material, which helped the heating of the samples, and sintered in a microwave oven at a frequency of 2.45 GHz and a power l
Materials Research. Publicado em: 2010-09
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7. Sintering behavior of porous wall tile bodies during fast single-firing process
In ceramic wall tile processing, fast single-firing cycles have been widely used. In this investigation a fast single-firing porous wall tile mixture was prepared using raw materials from the North Fluminense region.Specimens were obtained by uniaxial pressing and sintered in air at various temperatures (1080 - 1200 °C) using a fast-firing cycle (60 minutes
Materials Research. Publicado em: 2005-06
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8. Muffler modeling by transfer matrix method and experimental verification
Mufflers are widely used for exhaust noise attenuation in vehicles and machinery. Recent advances in modeling procedures for accurate performance prediction have led to the development of modeling methods for practical muffler components in commercial design. Muffler designers need simple and fast modeling tools, especially in the preliminary design evaluati
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-06
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9. Densificação rápida de cerâmicas de SnO2
Os pós à base de óxido de estanho são conhecidos por apresentarem baixa densificação mesmo a temperaturas de sinterização acima de 1500 °C. A introdução de diferentes íons metálicos como Mn2+, Fe3+ e Cu2+ induzem a redução do volume de poros e crescimento de grãos durante a sinterização. Pós à base de SnO2 foram preparados pela rota quím
Cerâmica. Publicado em: 2003-04
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10. Efeitos da segregação dos íons magnésio ou ferro nas características de superfície e na sinterizaçao do SnO2. / Segregation effects of magnesium or iron ions on the SnO2 surface characteristics and sintering.
As propriedades físico-químicas da superfície de pós cerâmicos desempenham um papel muito importante na obtenção de produtos cerâmicos de alta qualidade, elevada performance e confiabilidade. Estas propriedades estão relacionadas com as ligações químicas superficiais e suas interações com o meio. As superfícies dos óxidos geralmente contêm g
Publicado em: 2002
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11. The effects of digital nerve stimulation on the firing of motor units in human first dorsal interosseous muscle.
1. The effect of cutaneous stimulation on the firing of single motor units has been studied during voluntary contractions in human first dorsal interosseous muscle. 2. Electrical stimulation of the index finger at 3 x threshold for perception reduced the firing rate of most units recruited at voluntary contraction strengths less than 1.5 N and increased the
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12. Sensory input and burst firing output of rat and cat thalamocortical cells: the role of NMDA and non-NMDA receptors.
1. Intracellular and patch-clamp recordings were obtained from thalamocortical (TC) cells in the rat and cat dorsal lateral geniculate nucleus (dLGN) in vitro to study the role of N-methyl-D-aspartate (NMDA) and non-NMDA receptors in the synaptic potential and burst firing evoked by electrical stimulation of the optic tract. 2. At membrane potentials more po