Particulate Composites
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Biphasic 0.8BaTiO3/0.2Ni(1-x)CoxFe2O4 nanopowders by in situ sol-gel synthesis
Abstract Nanopowders of the 0.8BaTiO3/0.2Ni(1-x)CoxFe2O4 (x=0, 0.25, 0.5, 0.75, and 1) were synthesized by the in situ sol-gel method using poly(acrylic acid) (PAA1800) as a chelating agent. The synthesis developed using PAA1800 ensured the simultaneous crystallization of two phases. The results provided a reliable method for producing biphasic nanopowders i
Cerâmica. Publicado em: 2022
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2. Evaluation of the stiffening mechanism based on micro-sized particle inclusions in laminated composites
Rigid particles have been incorporated into laminated composites, especially to enhance their bending performance attributed to the stiffening of the matrix phase (i) and the increased interlaminar shear resistance (ii). In order to better evaluate the improvement mechanism provided by the particulate inclusions, this work investigates the incorporation of m
Mat. Res.. Publicado em: 17/10/2019
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3. Study on Effect of EAFD Particulate Reinforcement in AA7075 Aluminum Matrix Composites
Eletric arc furnace dust is dangerous solid waste that is generated in steel manufacturing processes. The utilization of the dust from these industries avoids disposing it into industrial waste landfills and saves costs. In this study, an attempt has been made to fabricate aluminum matrix composites reinforced with EAFD particulate, throught the conventional
Mat. Res.. Publicado em: 13/09/2018
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4. Effects of plasma on polyethylene fiber surface for prosthodontic application
ABSTRACT Plasma technology has the potential to improve the adherence of fibers to polymeric matrices, and there are prospects for its application in dentistry to reinforce the dental particulate composite. Objectives This study aimed to investigate the effect of oxygen or argon plasma treatment on polyethylene fibers. Material and Methods Connect, Cons
J. Appl. Oral Sci.. Publicado em: 2015-12
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5. A comparative study on propagation of elastic waves in random particulate composites
This paper aims to conduct a comparative study on four different models of effective field and effective medium for modeling propagation of plane elastic waves through the composites containing spherical particles with random distribution. Effective elastic properties along with the normalized phase velocity and attenuation of the average wave was numericall
Lat. Am. j. solids struct.. Publicado em: 2014
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6. FABRICAÇÃO E CARACTERIZAÇÃO DE REVESTIMENTOS A BASE DE RESINA EPÓXI COM AGENTES DE CARGAS COMERCIAIS. / FABRICATION AND CHARACTERIZATION OF COATINGS EPOXY RESIN BASE WITH LOADS OF TRADE AGENTS.
Resina epóxi são polímeros termorrígidos há muito tempo utilizado em diversas áreas da engenharia, por possuir a propriedade de fragilidade o uso dessa resina são muito restritos, diversos estudos são realizados para melhorar as propriedades da resina. Compostos particulados são em sua em boa parte pigmentos que tem com funcionalidade dá cor e em m
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/03/2012
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7. Analysis of semi-solid processing for metal matrix composite synthesis using factorial design
The main goal in this work is to conduct a quantitative analysis of the mechanical stir casting process for obtaining particulate metal matrix composites. A combined route of stirring at semi-solid state followed by stirring at liquid state is proposed. A fractional factorial design was developed to investigate the influence and interactions of factors as: t
Materials Research. Publicado em: 31/01/2012
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8. Influência de nanoestruturas na resposta dosimétrica de compósitos particulados de alanina/ouro e alanina/prata / Nanostructure Influence in the Dosimetric Response of Alanine/Gold and Alanine/Silver Particulate Composites
A interação da radiação ionizante com moléculas de alanina promove a quebra das ligações químicas entre o átomo de carbono central e os grupos que se ligam a ele, resultando na formação de radicais livres paramagnéticos. A técnica de dosimetria utilizando alanina e a ressonância de spin eletrônico (ESR) baseia-se na determinação da concentra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2011
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9. Behavior of granite-epoxy composite beams subjected to mechanical vibrations
The capacity to damp mechanical vibrations is one of the most important properties of granite-epoxy composites, even superior to the cast iron one. For this reason, these materials have been adopted for manufacturing of tool machine foundations and precision instruments. This work presents a study concerning the behavior of particulate composite beams, based
Materials Research. Publicado em: 2010-12
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10. Young's modulus of Al/SiC P/MgAl2O4 composites with different particle size distribution of reinforcements
The effect of particle size distribution of SiC particulate reinforcements coated with colloidal SiO2 on Young´s modulus of Al/SiCp/MgAl2O4 composites fabricated by reactive infiltration was investigated. Composites were prepared from porous preforms of silica-coated α- SiC powders of 10, 54, 86, and 146 μm, 0.6 volume fraction of reinforcements and parti
Matéria (Rio de Janeiro). Publicado em: 2010
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11. Characterization of compression strength of granite-epoxy composites using design of experiments
This paper presents a processing study of the polymer matrix composite (PMC) developed with an epoxy polymeric matrix reinforced with particulate ceramic granite. This PMC composite has been reported to be used as structural parts of machine tools and Coordinate Measuring Machines due to its superior vibration damping characteristics and reduced processing c
Materials Research. Publicado em: 2008-12
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12. Influencia del proceso de curado y del contenido de carga sobre la Tg y el volumen libre en compuestos particulados de matriz epoxi
A study about the influence of the curing process of epoxy matrix particulate composites on the glass transition temperature is presented. Aluminum particles with typical sizes ~100 mum were used in the composites. As experimental techniques, differential scanning calorimetry and positron annihilation lifetime spectroscopy were used. Throughout the curing pr
Matéria (Rio de Janeiro). Publicado em: 2007