Alternative Alloys
Mostrando 13-24 de 28 artigos, teses e dissertações.
-
13. Mechanical Characterization of Ti–12mo–13nb Alloy for Biomedical Application Hot Swaged and Aged
Beta titanium alloys were developed for biomedical applications due to the combination of its mechanical properties including low elasticity modulus, high strength, fatigue resistance, good ductility and with excellent corrosion resistance. With this perspective a metastable beta titanium alloy Ti-12Mo-13Nb was developed with the replacement of both vanadium
Mat. Res.. Publicado em: 23/10/2015
-
14. Caracterização de ligas magnéticas sinterizadas para aplicação em núcleos de máquinas elétricas rotativas
The purpose of this work is to study the properties of ferromagnetic alloys obtained by Powder Metallurgy to construct cores of Rotary Electric Machines, usually mounted on rolled steel sheets. To perform these activities, iron power and their alloys obtained by a mixture with different percentages of phosphorus (1, 2 and 3%), silicon (1, 3 and 5%) and nicke
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
15. Estudo dos fatores interferentes na adaptação marginal de próteses confeccionadas em titânio comercialmente puro e ligas alternativas / Study of determining factors for the marginal fit of prosthesis made of commercially pure titanium and alternative alloys
O desajuste de copings obtidos por fundição por cera perdida está sujeita à vários fatores tais como: contração de fundição do metal, expansão do revestimento, uso de espaçadores, entre outros. O objetivo do estudo foi avaliar o desajuste marginal pré e pós cimentação de copings obtidos com três ligas de metais básicos - Ni-Cr-Be (VB), Ni-Cr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/04/2011
-
16. Caracterização da resistência à corrosão de ligas de alumínio após tratamentos alternativos à cromatização, com e sem revestimento orgânico / Characterization of the corrosion resistance of aluminum alloys after alternative treatmentes the chromate, with and without organic coating
In this study, the protective properties provided by new surface treatments for aluminum aiming the replacement of treatments that are harmful to the environment and human health, have been evaluated. The following treatments were investigated: passivation in solution with trivalent chromium ions, surface modification with self assembling molecules (SAM), im
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/03/2011
-
17. âRevestimento por soldagem MIG/MAG empregando ligas de nÃquel para apliacaÃÃes em componentes do setor de petrÃleo e gÃs naturalâ / Gmaw Welding Overlay Of Nickel-Based Alloys For Applications In Oil And Natural Gas Components
The weld overlay of nickel-based alloys is an alternative often used in oil and gas industry to prevent corrosion in pipes and equipments operating under severe conditions. In many situations the requirements of weld overlays are based in a maximum of 5% iron content in the weld metal to ensure corrosion resistance. The aim of this study was to determine the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/12/2010
-
18. Revestimentos de liga de nÃquel depositados pelo processo TIG com alimentaÃÃo de arame frio: aspectos operacionais e metalÃrgicos / Nickel based alloys weld overlay deposited by gtaw cold wire feed: operational and metallurgical aspects
The weld overlay with nickel-based alloys is an interesting alternative for the construction and repair of equipments for applications in severe corrosive medium, allowing reach the desirable characteristics (corrosion resistance) with a significant reduction of cost. In this context, the GTAW cold wire feed process can be a good option for overlay depositio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2010
-
19. Sintering unalloyed titanium in DC electrical abnormal glow discharge
Powder metallurgy is widely used in the manufacture of components that have complex geometry. The good dimensional control, reduction in manufacturing steps and operating costs which has favored the use of this technique for manufacturing of titanium alloys components. However, the high affinity of this material with oxygen hinders strongly the sintering pro
Materials Research. Publicado em: 2010-03
-
20. Estudo de materiais magnéticos através de técnicas fototérmicas : efeito magnetocalórico e filmes finos / Study of magnetic materials using photothermal techniques : magnetocaloric effect and thin films
The magnetocaloric effect (MCE) has been widely studied because of its possible application in magnetic refrigeration. The search for suitable materials has intensified over the last decade, with a demand not only for the preparation of new materials but also for their complete characterization. The aim of this work is to apply the photothermal techniques to
Publicado em: 2010
-
21. A review on the development and properties of continuous fiber/epoxy/aluminum hybrid composites for aircraft structures
Weight reduction and improved damage tolerance characteristics were the prime drivers to develop new family of materials for the aerospace/aeronautical industry. Aiming this objective, a new lightweight Fiber/Metal Laminate (FML) has been developed. The combination of metal and polymer composite laminates can create a synergistic effect on many properties. T
Materials Research. Publicado em: 2006-09
-
22. Investigação da formação e efeitos do clorato sobre a reação de desprendimento de hidrogênio no processo de cloro-soda com tecnologia de diafragma / Formation and effecters of chlorate over hydrogen evolutoin in clhorine-alkalis diaphragm process
In this work, the formation and effects of chlorate ion were studied over hydrogen evolution reaction (HER), focusing for the chlorine and alkalis production by diaphragm process, using a pilot and bench cells, respectively. Studies in pilot cell revealed that chlorate formation is dependent of NaOH concentration in liquor and brine dwelling time. It was als
Publicado em: 2006
-
23. Power electronica control in direct water heater of optimized half cycles. / Controle eletrônico de potência em aquecedores elétricos de passagem por semi ciclos otimizados.
Modern electrical direct water heating (DWH) equipments use electrical resistances built with metal alloys (iron-chrome-aluminum or nickel-chrome) as heating elements. Water temperature control is usually made with water flow control, as well as with resistance tap changing. The simplicity of this approach conflicts with to the lack of flexibility to allow s
Publicado em: 2006
-
24. Caracteristicas de superficies, adsorção de proteinas e aderencia bacteriana em diferentes materiais odontologicos / Surface characteristics, proteins adsorption and bacterial adherence on different dental materials
The use of osseointegrated implants for replacing missing teeth is an important alternative in current dentistry. One of the most important conditions, which relates to the future success of implant procedures, is provided by the surface properties of the implant and its prosthetic abutments. Since these components penetrate through the gingival mucosa and a
Publicado em: 2006