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Relaxação estrutural da fase amorfa do tungstato de zircônio
(2016-12-19)
Zirconium tungstate (ZrW2O8) is a ceramic material which exhibits several unusual properties such as negative thermal expansion, amorphization induced by high pressures ( 1.5 GPa and 2.0 GPa) and endothermic recrystallization ...
Preparação e caracterização de novos materiais híbridos a partir de (3-aminopropil) trimetoxisilano
(2016-10-17)
In this work, was investigated the obtaining of new materials from the hydrolysis and acid condensation reactions of (3-aminopropyl) trimethoxysilane, which resulted in the formation of hybrid nanostructures with ammoniums ...
Avaliação química, microestrutural e tribológica de filmes finos de TiCxNy produzidos por arco catódico para aplicações decorativas
(2016-11-24)
The deposition of thin films can be employed to modify and/or functionalize the properties of a material’s surface, improving wear resistance (tribological properties) or changing the resistivity (electrical properties). ...
Preparação e caracterização de revestimentos híbridos de poliuretano-ureia a partir de fontes renováveis
(2016-10-17)
Motivation of the work was to investigate the synthesis of polyols obtained from air induced oxidation of the commercial soybean oil and use these as precursors in the preparation of polyurethane-urea hybrid coatings. ...
Comparação entre diferentes intercamadas contendo silício para adesão de filmes de DLC sobre substrato de aço AISI 4140
(2017-03-06)
Diamond-like carbon (DLC) films research has a high academic appeal, is being developed for more than four decades. Nowadays, the industrial needs in their properties, such as high wear resistance and superlow friction ...
Influência do metal de adição e da energia de soldagem na microestrutura e resistência à fadiga de juntas soldadas de aço de alta resistência e baixa liga DIN S700MC
(2017-05-10)
High strength and low alloy steels (HSLA) are attractive alternative in structural applications. Due to the low carbon and alloying elements (Ni, V and Ti) contents, HSLA steels show good levels of toughness and mechanical ...
Estudo das propriedades dinâmico-mecânicas e fluência de compósitos epóxi/tecido não-dobrável de carbono produzidos por VARTM e RFI
(2017-03-16)
The excellent cost-weigh-performance relationship of polymeric composites compared to traditional materials became a reason to development of advanced materials for structural application such as carbon/epoxy composites, ...
Melhoramento de sensores magnetostrictivos de deformação
(2017-04-06)
Magnetic amorphous ribbons have a great variety of sensorial applications due to their magnetic properties. The possibility of being remotely queried allows their application in cases where sensors with wired connections ...
Produção fotocatalítica de hidrogênio a partir de filmes finos poliméricos nanoestruturados suportados em substrato flexível
(2017-05-10)
The use of renewable energy such as solar energy to produce hydrogen gas (H2), through the photocatalytic process of breaking the water molecule, is a promising alternative to conventional energy sources. In this context, ...
Clarificação de vinho branco por microfiltração utilizando diferentes membranas cerâmicas e compósitas
(2017-03-24)
The tangential microfiltration applied to the clarification of white wine has become an important alternative to conventional filtration processes in the wine industry, for example, the filtration diatomaceous earth, land ...