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Mostrando ítems 31-40 de 413
Identificação das variáveis que ocasionam a variação de tonalidade utilizando a técnica de decoração por cilindros de silicone gravados a laser
(Universidade Federal de São Carlos, 2015-11-30)
A major problem in the production of ceramic tiles for coating is the variation of
tonality. The determination of their origin within the entire production process and to
minimize its occurrence by the manufacturer is ...
Estudo do método de mistura das suspensões precipitadas (MPS) para a síntese de catalisadores de tungstênio suportado em zircônia (WOx/ZrO2)
(Universidade Federal de São Carlos, 2017-11-16)
Zirconia-supported tungsten oxide (WOx/ZrO2) is one of the main acid catalysts. The development of new methods for its preparation has been widely studied lately. This thesis presents a study of a new synthesis method, ...
Identificação de um modelo constitutivo para simulação computacional do processo de prensagem a frio de um material refratário sílico-aluminoso
(Universidade Federal de São Carlos, 2016-08-05)
One of the methods for the processing of refractory material is cold pressing of the powder material, followed by sintering. Heterogeneous distribution of density can occur in the green compact during pressing because of ...
Zircônia CO-dopada por compensação de cargas nos sistemas (ZrO2)1-(x+y)(InO1,5)x(MOz)y com MOz = TaO2,5, NbO2,5, MoO3 ou WO3, como revestimento para barreira térmica
(Universidade Federal de São Carlos, 2016-09-30)
InO1.5-stabilized zirconia (InSZ) is a potential hot corrosion resistant thermal
barrier coating (TBC). However, the thermal instability prevents real applications
of InSZ-based TBC. This thesis investigates the hypothesis ...
Preparação de membranas poliméricas porosas a partir de técnicas de espumação com agentes físicos de expansão
(Universidade Federal de São Carlos, 2016-07-07)
The objective of this master’s thesis was to develop a process of
manufacturing porous polymer membranes for microfiltration by a one-step
foaming technique, using carbon dioxide (CO2) as physical blowing agent and
ethanol ...
Desenvolvimento e caracterização de concretos refratários ligados quimicamente por fosfatos para aplicação em indústrias petroquímicas
(Universidade Federal de São Carlos, 2017-10-05)
The objective of this work was the development of chemically phosphatebonded
refractories for applications in petrochemical industries due to their
suitable properties such as high green mechanical strength, erosion ...
Propriedades de armazenagem de hidrogênio do intermetálico TiFe processado por moagem de alta energia e laminação a frio sob atmosfera controlada
(Universidade Federal de São Carlos, 2017-03-27)
TiFe is a material of practical interest for hydrogen storage due to its absorption capacity of ~ 1.9 wt. % H at room temperature and the relative low cost of its constituent elements. However, this intermetallic requires ...
Condutividade iônica e atividade termodinâmica em vidros x AgI (1-x) AgPO3, 0 ≤ x ≤ 0,5
(Universidade Federal de São Carlos, 2012-09-14)
The ionic conductivity in solids is known since the 19th century, but the
mechanisms of charge carriers transportation in amorphus solids is not yet fully
known. The control of ths property is especially important for ...
Estudo dos efeitos do biodiesel e suas misturas com óleo diesel em materiais metálicos
(Universidade Federal de São Carlos, 2017-03-09)
The use of biodiesel in vehicles can significantly reduce dependence on fossil fuels and help to reduce environmental pollution. However, there are concerns about the compatibility of automotive materials in contact with ...
Monitoramento em tempo real da cristalização quiescente e induzida por fluxo de polipropileno em microscópio óptico de luz polarizada
(Universidade Federal de São Carlos, 2015-08-07)
In the polymer forming processes, such as injection molding, extrusion of films / sheets and blowing, these materials are subject to shearing and elongation flows. Such conditions influence its final morphologies. When ...