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Now showing items 31-40 of 144
Análise térmica e energética do revestimento refratário de panelas de aço via modelos computacionais
(Universidade Federal de São Carlos, 2018-07-30)
The secondary metallurgy is an energy-intensive step in the steelmaking process that requires an accurate adjustment of the composition and temperature of the molten metal during the ladle refining. In this context, the ...
Otimização do processo de secagem de concretos refratários
(Universidade Federal de São Carlos, 2020-08-11)
The drying step of hydraulic-bonded refractory castables is usually carried using conservative and long heating schedules, in order to preserve the microstructure of dense ceramic linings and inhibit explosive spalling ...
Cerâmicas refratárias macroporosas derivadas de espumas ultraestáveis estabilizadas com partículas cerâmicas
(Universidade Federal de São Carlos, 2020-11-03)
Innovation on materials for heat conservation in high-temperature industrial
processes is seen as an important strategy for Energy Efficiency. Fundamental
studies can support the development of these materials and the ...
Avaliação de matérias-primas alternativas com ação ligante ou sinterizante para concretos refratários
(Universidade Federal de São Carlos, 2020-08-05)
Refractory materials are used as linings in most equipment of heavy industries. As the latter are continuously seeking to reduce expenses in order to increase their energy efficiency and productivity, the evaluation of ...
Controle da hidratação do óxido de magnésio: fundamentos físico-químicos e aplicação tecnológica
(Universidade Federal de São Carlos, 2016-08-24)
Magnesium oxide has been proposed as an alternative binder to calcium aluminate cement in refractory castables with reduced amount of CaO. The binding effect is generated by the MgO hydration, resulting in brucite [Mg(OH)2]. ...
Desenvolvimento de nanocompósitos de amido/palygorskita modificada com íons de prata via casting contínuo
(Universidade Federal de São Carlos, 2019-02-27)
The food industry has invested cheap and efficient technologies capable of providing fresh and additive-free food products. One of the possible solutions is the use of antimicrobial active packaging that ensures the ...
Síntese in situ pelo método Pechini assistido por micro-ondas dos compósitos livres de chumbo (1-x)BaZr0,08Ti0,92O3/(x)CoFe2O4
(Universidade Federal de São Carlos, 2019-04-30)
Currently, there is considerable interest in developing lead-free composites in the scientific area. This is occurs due to the growing demand for new multifunctional materials with potential technological applications. ...
Estudo da incorporação de nanopartículas de óxido de zinco e pentóxido de nióbio em polietileno linear de baixa densidade
(Universidade Federal de São Carlos, 2019-03-29)
Linear low-density polyethylene (LLDPE) is one of the most widely used materials in greenhouse covering, due to its low cost and transparency to photosynthetically active radiation up to 80%. However, this polymer also ...
Estudo de microscopia eletrônica de transmissão in situ de nanoestrutura de óxidos mistos em altas temperaturas
(Universidade Federal de São Carlos, 2018-09-19)
This work addresses the characterization of the high temperature reactions between different nanoparticles oxides, CeO2-ZrO2 and CeO2-SnO2, by the direct observation of the phenomenon by in situ Transmission Electron ...
Avaliação do efeito de agentes hidrofugantes nas características de telhas onduladas de fibrocimento sem amianto
(Universidade Federal de São Carlos, 2019-07-22)
The fiber cement is a material of great applicability in the branch of the civil construction, due to its characteristics, versatility and low cost, that makes it an accessible element. Fiber cement corrugated tiles are ...