Search
Now showing items 21-30 of 207
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, ...
Comportamento do atrito por indentação em nanoescala do aço-carbono AISI 1045 nitretado e pós-oxidado com diferentes nanocamadas de magnetita
(2016-05-18)
The friction phenomenon still does not have an understanding in fundamental terms. Such understanding would help clarifying the frictional energy dissipation during the interaction between atoms of two or more surfaces ...
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 ...
Microestrutura e propriedades tribológicas de aços austeníticos Fe-Cr-Ni-Mo sinterizados com adição de itria e boro
(2016-10-06)
Austenitic stainless steel materials are widely used in systems that require high
oxidation resistance and corrosion resistance. However, in contact with other surfaces,
these materials show a high coefficient of friction ...
Produção, dispersão e consolidação de zircônia obtida a partir do tungstato de zircônio
(2016-05-11)
The aim of the present work is to explore the production, dispersion and consolidation of zirconia (zirconium oxide – ZrO2), in its hydrous form, obtained from zirconium tungstate (ZrW2O8) in alkaline medium using temperatures ...
Preparação, caracterização e aplicação de híbridos de montmorilonita-alginato-nanopratas na desinfecção de efluentes industriais para águas de reuso
(2015-03-04)
Different techniques have been developed to eliminate microorganisms from industrial wastewater and improve its final quality for reuse. Among them, the use of silver nanoparticles (AgNPs) anchored on montmorillonite (MMT) ...
Efeito da temperatura na estrutura físico-química de intercamadas depositadas a partir de HMDSO para adesão de DLC em aço
(2016-08-09)
Diamond-like carbon thin films (DLC) show a unique combination of properties such as high wear resistance and ultra-low friction. However, a widespread use regarding energy efficiency issues in the automobile industry is ...
Estudo da adsorção do corante azul de metileno por um resíduo sólido da indústria do suco de maça
(2016-07-22)
The development of new technologies for the treatment of wastewater containing dyes has generated a great interest in recent years, due to increase awareness about environmental preservation, in addition to the rigidity ...
Desenvolvimento e caracterização de composições elastoméricos de EPDM com redução no teor de óxido de zinco
(2016-06-27)
Zinc oxide nanoparticle (nano ZnO) is a kind of inorganic multifunctional filler, which has extensive uses in rubber additives. Notably, most of relevant researches about nano ZnO focused on using them as a substitute of ...