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Análise dos modos de falha do revestimento de AlCrN depositado por PVD sobre H13
(2014-06-23)
Moulds, dies and cutting tools are subject to high mechanical stress and/or thermal
stress that, over time, result in failure in such tooling. In the manufacturing process of such
tools there are several steps and, among ...
Comportamento do desgaste e posterior corrosão do sistema duplex AISI 4140 nitretado/CrN em bioetanol combustível
(2014-06-24)
This work shows a study of the tribological and corrosive behaviour of AISI
4140 steel previously quenched and tempered, plasma nitrided and then coated with
CrN thin film, in contact with hydrated ethanol fuel. The ...
Propriedades fisico-químicas, mecânicas e treibológicas de filmes finos de Si3N4 contendo MoS2
(2014-06-24)
One of the purposes of surface engineering is to combine physical-chemical,
tribological and mechanical properties of materials aiming high hardness, low friction
coefficient and high wear resistance, associated with ...
Influência da restrição do fluxo na microestrutura e nas propriedades mecânicas de compósitos de poliamida 6.6 reforçados por fibras de vidro longas obtidos por injeção
(2014-06-24)
Currently there is a large growth in the use of thermoplastic composites reinforced
with long glass fiber. These composites have the mechanical properties required for
structural and automotive applications, because they ...
Filmes finos de carbono amorfo hidrogenado depositados por plasma DC pulsado melhorado por confinamento eletrostático : teoria e prática
(2014-06-24)
In this work, amorphous hydrogenated carbon (a-C:H) thin films were deposited
using a simple, low cost and efficient pulsed DC - plasma-enhanced chemical vapor
deposition technique improved by electrostatic confinement ...
Preparação e caracterização de filmes nanoestruturados suportados em membrana de celulose contendo nanopartículas de Au e TiO2 para produção de H2
(2014-06-24)
The search for renewable energy sources is a subject of great interest worldwide due to
growing energy demand, instability in oil prices and environmental problems. In this
context, the self-assembled thin films have ...
Avaliação da corrosão no aço AISI 4140 nitrocarbonetado e pós-oxidado a plasma em etanol hidratado combustível
(2014-06-24)
Environmental and energy sustainability issues have promoted the search for biofuels
produced from renewable sources, such as ethanol obtained from sugarcane processing.
However, this new generation of biofuels can cause ...
Desenvolvimento de compósitos com base em rejeito de tecidos de algodão e acrílico em matriz de polietileno de alta densidade
(2014-05-12)
Composites of high density polyethylene (HDPE) with waste textile fiber (WTF) with optimized mechanical properties were developed in order to make possible the recycling these residues. In order to accomplish this goal, ...
Propriedades mecânicas e microestruturais de aços de alta resistência e baixa liga soldados
(2014-05-21)
In the present work we investigated the mechanical and microstructural proprieties of the ZSTE380 and DOGAL800 high strength low alloys steels (HSLA), comparing to the conventional ZAR230 steel, before and after welding. ...
Avaliação de métodos de fabricação de mantas híbridas de fibras curtas de vidro e sisal em compósitos poliméricos
(2014-05-22)
This work is focused at development and evaluation of confection methods of short fibers hybrid mants aiming attend the necessities of automobile industry in the production of small parts with smaller cost and specific ...