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Crescimento super e subcrítico de trincas em vidros e vitrocerâmicos analisado via indentacão
(Universidade Federal de São Carlos, 2012-07-02)
In this dissertation we quantified properties that may better describe the mechanical behaviour of different glasses and glass-ceramics of the Na2O-CaO-SiO2-P2O5 system, based on the Biosilicate®chemical composition developed ...
Compatibilização química em compósitos de PLA reforçados com fibras de sisal
(Universidade Federal de São Carlos, 2018-07-13)
Even though poly(lactic acid) (PLA) is fragile under impact and has low toughness, the polymer stands out for its stiffness and high tensile strength. This polymer is an interesting material not only for short-term ...
Estudo da resistência à corrosão de ligas de alumínio com grãos ultrafinos obtidos por deformação plástica severa através do processo ECAP
(Universidade Federal de São Carlos, 2017-10-02)
The present work evaluated the effect of severe plastic deformation and ultrafine grains, obtained through the ECAP (equal-channel angular pressing) process, in the corrosion resistance of AA1050 aluminum alloy. The ...
Ligas Sn-Ni: efeitos da taxa de resfriamento e da microestrutura nas propriedades mecânicas de tração
(Universidade Federal de São Carlos, 2018-02-28)
The present investigation examined the microstructural arrangements formed during the transient solidification of the eutectic Sn-0.2wt.%Ni and the hypereutectic Sn-0.5wt.%Ni alloys using two different substrates as mold ...
Correlações entre microestrutura, parâmetros térmicos e propriedades mecânicas de ligas de alumínio da série 5xxx solidificadas unidirecionalmente
(Universidade Federal de São Carlos, 2017-08-04)
Processing high-Mg content Aluminum Alloys by continuous casting technics is considered an industry challenge. The present research aims to characterize 5xxx alloy series, considering composition based on the commercial ...
Fabricação de amostras maciças da liga Fe-Co-B-Si-Nb com estrutura amorfa pela rota de atomização e extrusão a quente
(Universidade Federal de São Carlos, 2018-08-23)
Metallic glasses alloys are a relatively new class of materials characterized by the absence of structural long-range order. During heating, these alloys exhibit a glass transition at a temperature (Tg) before reaching the ...
Desenvolvimento do aço inoxidável supermartensítico resistente ao desgaste por conformação por spray para aplicação em "risers"
(Universidade Federal de São Carlos, 2013-04-24)
The oil exploitation and production in the pre-salt layers in safe, efficient and economically viable way depend on the development of materials that bear the severe conditions found in their applications during their whole ...
Microestrutura e propriedades mecânicas de vitrocerâmicos do sistema Li2O – CaO – SiO2
(Universidade Federal de São Carlos, 2013-03-12)
An interesting characteristic of the Li2O-CaO-SiO2 glass-forming system is the possibility of obtaining certain crystalline phases and morphologies that may lead to tough glass-ceramics. However, very few published works ...
Desenvolvimento de Nanoblendas PLA/EVOH biodegradáveis com características de barreira a gases e vapores
(Universidade Federal de São Carlos, 2018-07-20)
Poly (lactic acid) (PLA) is a non-toxic, transparent and biodegradable aliphatic polyester, produced from renewable raw materials. This polymer meets several requirements for packaging applications, but is fragile and has ...
Estudo da viabilidade técnica do reaproveitamento de altos teores de fibras de poli(para-aramida) como reforço mecânico em poliamida 66
(Universidade Federal de São Carlos, 2018-10-26)
Responsible for an annual demand higher than 70 millions of tons, the poly(para- aramide) fibers are being widely used in the safety, automobilist, aeronautic, and petroleum industries, due to their attractive mechanical, ...