Buscar
Mostrando ítems 341-350 de 444
Produção e caracterização de recobrimentos de aço, empregando a liga amorfizável Fe-Cr-Nb-B
(Universidade Federal de São Carlos, 2012-02-13)
The equipments used to oil flow are submitted in an aggressive environment with the presence of hydrogen sulphide, carbon dioxide and sand, which contribute to corrosion and wear of the surface. To resist of these requests ...
Resistência de linha de solda em moldados por injeção de compósitos de polipropileno com talcos e fibra de vidro.
(Universidade Federal de São Carlos, 2003-07-03)
The presence of weld lines in injection moulded reinforced thermoplastics
contributes towards substantial reduction in mechanical properties, due to
unfavourable orientation of the reinforcement in the weak plane of the ...
Desenvolvimento de nanoblendas poliméricas PMMA/SAN
(Universidade Federal de São Carlos, 2012-08-03)
The motivation for this work was the idea that nanoblends are fundamentally dependent on the high interaction between the phases in the mixture. The strategy adopted in this study was based on the use of two polymers that ...
Resistividade elétrica de cerâmicas de alumina a temperatura ambiente e a 600oC
(Universidade Federal de São Carlos, 1992-03-10)
Alumina (Al2O3) ceramic specimens have been prepared via traditional ceramic process, namely, powder analyses, classification and conditioning, uniaxial cold pressong and sintering. DC electrical resistivity measurements ...
Processamento sol-gel de pós bioativos vítreos e cristalinos
(Universidade Federal de São Carlos, 2010-03-19)
In recent years, the sol-gel process has been increasingly used in the preparation of glasses and glass-ceramics with biomedical applications. Although the precursors used in this synthesis methodology are a very important ...
Estudo da influência da adição de compostos de boro na resistência à oxidação de refratários a base de carbeto de silício-liga de nitreto.
(Universidade Federal de São Carlos, 2004-08-06)
In this work, boron was added in a commercial silicon carbide bonded silicon nitride refractory and its influence has been evaluated. These materials have been used as high temperature structural ceramic due to their ...
Análise da superfície de porcelanatos polidos por meio de microscopia de força atômica
(Universidade Federal de São Carlos, 2010-05-24)
The porcelain stoneware tile is a ceramic product that has presented a great increase on production, since it had excellent technical properties and raised aesthetic performance. To improve its aesthetic characteristics, ...
Tenacificação de polipropileno com elastômeros olefínicos para aplicações com requisitos de transparência ótica
(Universidade Federal de São Carlos, 2011-07-19)
The polypropylene is a versatile polymer but has lack of impact resistance. The polypropylene toughness is obtained thorugh the adition of elastomers that cause the loss of the blend stiffness. Many studies were performed ...
Estudo das propriedades de transporte de água e íons em tintas de acabamento à base de poliuretana alifática e poliuretana acrílica, novas e após envelhecimento sob radiação UV.
(Universidade Federal de São Carlos, 2005-08-26)
The present work has as objective the comparative study between anticorrosive painting systems with two types of vehicle - aliphatic polyurethane and acrylic polyurethane - loaded with different concentrations of iron oxide ...
Evolução microestrutural e propriedades mecânicas decorrentes da solidificação das ligas Al-11%Si-xCu
(Universidade Federal de São Carlos, 2018-11-21)
Al-Si-Cu ternary alloys are highly used and recommended to produce joints of aluminum alloys using brazing process. Dissimilar joints between these alloys and stainless steels, carbon steels and low alloy steels can also ...