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Otimização da condutividade iônica de vitrocerâmicas condutoras por íon sódio: controle microestrutural e busca de novas composições
(Universidade Federal de São Carlos, 2020-04-03)
Sodium-based materials are promising candidates for manufacturing stationary storage devices such as batteries due to their low cost and the Na high redox potential. However, the corrosion, flammability, and the degradation ...
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 ...
Efeito da porosidade sobre o manchamento de porcelanato polido
(Universidade Federal de São Carlos, 2009-12-15)
Porcelain tile is a type of ceramic tile which has shown the highest worldwide expansion in recent years due to the excellent technical and esthetic qualities of the product, which have augmented the possibilities of its ...
Desempenho de filmes soprados multicamada de blendas de polipropileno e copolímeros de etileno
(Universidade Federal de São Carlos, 2012-08-30)
Polypropylene (PP) and polyethylene (PE) are widely used in the flexible packaging market individually as mono or multilayer films. Blending PP and PE in coextruded films has shown limited commercial applications due to ...
Sistemas nanoestruturados condutores baseados em nanocompósitos poliméricos condutores e mantas eletrofiadas condutoras
(Universidade Federal de São Carlos, 2013-05-10)
In this work its was investigated the influence of the processing on the electrical and dielectric properties of nanostructured polymeric systems obtained by differents techniques. The morphology and structure of the ...
Deformação em canal angular de uma liga Al-4%Cu: efeito dos mecanismos de endurecimento na resistência mecânica e ductilidade
(Universidade Federal de São Carlos, 2011-03-03)
Internal boundaries hardening and precipitation hardening are two important mechanisms acting in metallic alloys. The former has special relevance when the grain size is reduced ...
Estudo da influência de íons titânio e cobalto nas propriedades magnéticas e absorvedoras de ondas eletromagnéticas de hexaferrita de bário
(Universidade Federal de São Carlos, 2008-02-22)
In this work Cobalt and Titanium doped Barium hexaferrites were
synthesized by the ceramic method in order to study their use as
electromagnetic absorbing materials in high frequencies. The dopants were
used individually ...
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 ...
Influence of surface treatments on corrosion resistance properties of ultrafine grained titanium alloys for biomedical applications
(Universidade Federal de São Carlos, 2019-08-09)
Titanium and its alloys are used as biomaterials because their excellent combination of high corrosion resistance, low modulus of elasticity and biocompatibility. However, titanium and its alloys cannot meet all the clinical ...
Estudo da indução da grafitização da resina fenólica fenol/formaldeído
(Universidade Federal de São Carlos, 2019-08-14)
Among the probable carbon sources, there are the polymers, as the phenolic resin, which produces residual carbon around 60% wt./wt. after thermal treatment. It is classified as non-graphitizable, because it has not graphitic ...