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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 ...
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 ...
Transporte atômico e reação química em nanoestruturas TiN e TiN/Ti em aço nitretado a plasma
(2014-05-28)
The use of cutting tools in progressively more severe conditions in the metal-mechanics industry and the requirement to increase tool life against friction, wear and high temperature corrosion made of surface treatments ...
Avaliação da incorporação de nanopartículas de ouro em filmes automontados de polieletrólitos fracos
(2014-06-05)
Nanotechnology has brought some new challenges such as the development of quality and synthesis processes on nanostructures based on inorganic and organic substances. The development of new materials with organic and ...
Efeito da oxidação nas análises de dureza e atrito em filmes finos de Si3N4
(2014-06-23)
Hard coatings are widely used in surface engineering of mechanical components due to
their high wear resistance and reduced friction coefficients. Actually, the dry cutting techniques
are demanding new materials with ...
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 ...
Deposição de filmes finos de nitreto de zircônio para aplicação em biomateriais
(2014-06-04)
Zirconium nitride (ZrN) nanometric films were deposited onto different substrates, in order to study the surface microstructure and also to investigate the electrochemical behavior to obtain a better composition that ...
Preparação, caracterização e aplicação de filmes finos de PAH/PAA com nanopartículas de prata no tratamento microbiológico de efluentes industriais para reuso
(2014-06-24)
The rapid growth of nanotechnology has attracted increasing interest from many researchers for producing econanomaterials, aiming its subsequent application in thematics related to environmental issues. In this context, ...
Propriedades fisico-químicas, mecânicas e tribológicas 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 ...