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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 ...
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 e caracterização de compósitos sanduíche para isolamento térmico
(2014-05-29)
A sandwich panel consists essentially of two face sheets and may even have metal reinforcements and a core formed, usually by a cellular polymer. The faces of this type of panel may be joined by a structural adhesive or ...
Estudo de aplicação de areia descartada de fundição como material alternativo para camada de cobertura de aterro de resíduos
(2014-05-29)
Advances in environmental issues related to materials science have been done due to the possibility of the use of alternative materials replacing conventional ones with similar characteristics. The Brazilian Foundry has ...
Amplificação da dureza de estruturas de multicamadas de filmes finos CrN/Si3N4
(2014-06-23)
Surface engineering has been searching to attend the industrial demand for tools, parts
and other components with larger lifecycles and higher wear resistance, by means of
protective coatings whose mechanical, physical-chemical ...
Obtenção e caracterização de compósitos preparados com poliestireno expandido reciclado e pó de madeira
(2014-05-29)
The present work aims to analyze the mechanical, thermal, dynamicalmechanical thermal properties and morphology of composites based on recycled polystyrene and wood flour. Composites with different types and levels of ...
Química de superfície e atrito em nanoescala do aço-carbono AISI 1045 nitretado e pós-oxidado a plasma
(2014-06-23)
This work presents a quantitative chemical interpretation of friction for the
most external layers of AISI 1045 steel previously nitrided and post-oxidized during 0, 1,
5, 10, 20 and 30 min. The characterization of ...
Fotossensibilizadores nanoestruturados por sistema camada por camada
(2014-06-05)
The search for materials that can be modified at molecular level has been the subject of several studies worldwide. Thus, the production techniques of thin films stand out due to the possibility of reducing costs and ...