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Análise da influência das condições de processamento na morfologia e nas propriedades de blendas poliméricas PBT/ABS moldadas por injeção
(Universidade Federal de São Carlos, 2011-06-29)
A study on the correlation of blend morphology, properties, the injection molding process and manufacturing methods of polymeric blends constituted of PBT and ABS was proposed. Thus, uncompatibilized PBT/ABS blends have ...
Modificação por nitretação a plasma das superfícies dos aços AISI-4140, AISI-420C e DIN16MnCr5
(Universidade Federal de São Carlos, 2011-05-26)
Plasma nitriding is a surface modification technique used for improving hardness, wear resistance, and fatigue. In this work, samples of AISI-4140, DIN16MnCr, and AISI-420C steels were heat treated, forming martensitic ...
Moagem de alta energia e deformação plástica severa do Mg e do Mg-Fe na síntese de hidretos para armazenagem de hidrogênio
(Universidade Federal de São Carlos, 2017-03-04)
Magnesium is a light metal with a relatively low cost. It can form magnesium hydride (MgH2), which is interesting for the safe storage of hydrogen in the solid state, thanks to its high gravimetric capacity of 7.6%. The ...
Comportamento mecânico de poli(éter-éter-cetona) revestida com hidroxiapatita por aspersão plasma para uso em implantes cirúrgicos
(Universidade Federal de São Carlos, 2015-12-10)
The remarkable advances in scientific research of materials for ever demanding service requirements has led to novel developments of biomaterials, especially in the field of surgical implants. In this field, the semi-crystalline ...
Estudo das propriedades mecânicas do aço ao boro 50B35 com diferentes tamanhos de grãos
(Universidade Federal de São Carlos, 2015-07-22)
Boron steel has excellent hardenability due to the addition of small quantities of
boron. Boron atoms reduces the nucleation rate of ferrite and bainite [1]. It is
known that austenitizing temperature and time and cooling ...
Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros
(Universidade Federal de São Carlos, 2014-01-30)
This work shows the development, construction, validation and application of an in-line colorimeter used for real time color quantification of the melted flow during polymer processing in the extruder. The device uses a ...
Previsão do posicionamento de partículas de nanosílica numa blenda polimérica imiscível e comprovação via turbidimetria
(Universidade Federal de São Carlos, 2016-03-07)
The optical behavior of polymer systems with nanoparticles was studied in order to quickly assess the location of the nanoparticles in the immiscible polymer blend phases and interface using optical microscopy. The systems ...
Estudos qualitativos das transformações termodinâmicas ocorridas durante o processo pirometalúrgico de recuperação de Pb a partir de PbSO4
(Universidade Federal de São Carlos, 2013-08-01)
This study was carried out in order to gain a qualitative understanding of one of the fundamental processes of pyrometallurgical recovery of Pbfrom the inorganic scraps of lead-acid batteries by the reduction of PbSO4to ...
Indicadores de patentes para o monitoramento tecnológico em aços para dutos utilizados em transporte de hidrocarbonetos
(Universidade Federal de São Carlos, 2016-08-05)
Most part of the hydrocarbons reserves used in the global energy matrix are far
from their main consumer markets. One of the most technically and
economically viable means for such transport is carrying it out ...
Condutividade iônica e eletrônica em vidros 0,50[xAg2O(1-x)V2O5].0,50P2O5
(Universidade Federal de São Carlos, 2016-10-27)
Mixed conductive glassy materials have in their composition, in addition
to a glass former, a metallic element in two oxidation states and ions with high
mobility, generally alkaline or Ag+ ions. These materials can be ...