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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 ...
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 ...
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 finos automontados de polieletrólitos/TiO2/CdSe para aplicação na geração de hidrogênio a partir da fotocatálise da água
(2016-06-27)
The self-assembled films (SAF) by physical adsorption, compounds of organic polyelectrolytes and inorganic semiconductor nanoparticles are considered an inexpensive process and non-pollutant deposition that gives films ...
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). ...
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, ...
Deposição e caracterização de filmes finos de nitreto de titânio para aplicações decorativas
(2015-02-11)
This work studies the deposition of titanium nitride (TiN) thin films on stainless steel AISI 304 substrate for decorative applications. The films studied here are composed of a layer of Ti working as an interlayer between ...
Filmes de PAH/PAA com nanopartículas metálicas para a desinfecção de efluentes industriais
(2018-03-28)
The supply and access to drinking water is one of the great challenges of this century. In this perspective, the rapid advancement of Nanotechnology has contributed significantly to the development and production of ...
Aperfeiçoamento da adesão de filmes finos de carbono amorfo hidrogenado através do entendimento físico-químico de intercamadas de silício
(2018-04-19)
The diamond-like carbon (DLC) thin films family, in particular hydrogenated amorphous carbon films (a-C:H) have interesting properties for academic and technological purposes. High wear and ultra-low friction can be found ...
Preparação, caracterização e aplicação de filmes finos nanoestruturados de PAH/PAA/TiO2 na fotoxidação de ibuprofeno
(2018-08-22)
Ibuprofen is an anti-inflammatory with an annual production of more than 15 thousand tons, whose concentration in aquatic ecosystems reaches the order of tens of μg L-1. The degradation of this emerging pollutant and other ...