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Desenvolvimento do sensor baseado em eletrólito sólido de β-alumina para monitoramento de enxofre na indústria siderúrgica
(Universidade Federal de São Carlos, 2007-10-26)
Electrochemical sensors provide real time information of chemical
compositions of molten metal. They can be used to improve the control of
various metallurgical processes. One of the most successful and widely ...
Modificação microestrutural da liga Al-Si 380 conformada por spray com a co-injeção de partículas contendo fases intermetálicas
(Universidade Federal de São Carlos, 2007-12-19)
The aim of this work was to determine the microstructure and the mechanical properties of a spray formed Al-Si 380 alloy in different conditions as follow: co-injection of particles containing intermetallic phases, extrusion ...
Caracterização e avaliação de filmes metálicos para uso em ultra-alto vácuo
(Universidade Federal de São Carlos, 2007-11-27)
The construction of ultra-high vacuum chambers (UHV) for particle accelerators demands pressure in the range of 10-8 Pa, and this is particularly difficult to achieve in chambers with the length to traverse section rate ...
Vitrocerâmicas do sistema Li2O - Al2O3 - SiO2 (LAS) via sinterização com cristalização concorrente
(Universidade Federal de São Carlos, 2007-03-02)
LAS (Li2O-Al2O3-SiO2) glasses have been often used to produce glass-
ceramics with near zero thermal expansion coefficient. These glass-ceramics
are very important for applications that require high thermal shock ...
Refratários para o transporte de alumínio líquido: fundamentos, simulação e prática industrial
(Universidade Federal de São Carlos, 2007-09-13)
Not only for the development of their products, the aluminum industry has
engaged its efforts in services for their customers. One of them is the molten
aluminum delivery (7 to 8 t) in crucibles for long distances (over ...
Avaliação da resistência à corrosão da liga 2024-T351 soldada por FSW Friction Stir Welding
(Universidade Federal de São Carlos, 2007-09-14)
The corrosion resistance of aluminum alloy can be impaired due to
intermetallic precipitation during thermal treatment to improve mechanical
properties. This work investigates the corrosion resistance of aluminum alloy
2024-T351 ...
Avaliação eletroquímica de juntas soldadas por fricção radial de aços inoxidáveis supermartensíticos
(Universidade Federal de São Carlos, 2007-03-23)
Supermartensitic stainless steels are used in the oil and gas industry to the construction of line pipes which require welding operations. This process affects the corrosion resistance of the welded joint. Recently, new ...
Desenvolvimento de eletrodo FGM a base de Ni-zircônia para célula a combustível de sólido óxido
(Universidade Federal de São Carlos, 2007-03-01)
The search for alternatives sources to fossil fuel has stimulated the
technological development of solid oxide fuel cell. Hydrogen is the ideal fuel for
this application. However, due to technical reasons, alternatives ...
Avaliação de um critério de equivalência entre dados de tração a quente e fluência em aços
(Universidade Federal de São Carlos, 2007-05-28)
This work was conducted in four stages, the first to understand the phenomena that affect the 2.25Cr-1Mo steel hot tensile in different conditions, observing their behavior in a wide range of temperature and strain rates, ...
Formação de grãos ferríticos ultrafinos através de transformação de fase induzida por deformação
(Universidade Federal de São Carlos, 2007-10-26)
One of the key points in steel development has been the refinement of the microstructure, however without change the chemical composition with addition of alloy elements. The refinement of the ferrite grain size leads ...