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Itens para a visualização no momento 11-20 of 26
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 ...
Obtenção do sistema nanoestruturado livre de chumbo (Na0,5Bi0,5)0,94Ba0,06TiO3 (NBT-BT6) via rotas químicas
(Universidade Federal de São Carlos, 2020-09-16)
Perovskites based on sodium bismuth titanate (Na0.5Bi0.5TiO3) are
promising candidates for replacing some ceramic materials based on lead due
to piezoelectric properties. The solid solution 0.94(Na0.5Bi0.5)TiO3-0.06BaT ...
Conductive polymers derived heteroatom doped carbon catalysts for oxygen reduction reaction
(Universidade Federal de São Carlos, 2020-12-02)
Fuel cell is an electrochemical energy conversion system, that holds the
promise for clean and sustainable energy source. During the operation, this
device generates electricity direct from electrochemical reactions ...
Crack network monitoring upon curing and drying of high-alumina MgO-containing refractory castable via digital image correlation
(Universidade Federal de São Carlos, 2020-12-23)
MgO particles are added to high-alumina refractory castable formulations to
form spinel at high temperatures. However, these particles react with water forming brucite, which causes heterogeneous expansions in the material ...
Estudo de massas de porcelanato esmaltado contendo filito como fundente
(Universidade Federal de São Carlos, 2020-12-17)
The production of ceramic tiles is growing worldwide and Brazil is the third-largest producer in the world. Porcelain tiles represent a significant fraction of this production and the trend is for significant growth in the ...
Resistência ao escorregamento de revestimentos cerâmicos: avaliação por diferentes métodos, correlações com a topografia e o desgaste da superfície durante o uso
(Universidade Federal de São Carlos, 2020-09-17)
The development of ceramic floors for safe use in environments associated with slip and fall accident risks, which are even higher in the presence of water and contaminants, deals with the following difficulties: 1) although ...
Adição de resíduo de casca de eucalipto em matriz de pvc com diferentes concentrações e tamanhos: caracterização do resíduo e do compósito
(Universidade Federal de São Carlos, 2020-05-27)
Brazil is the largest producer of short fiber cellulose worldwide, mainly obtained from eucalyptus, which is a fast-growing tree. Due to this high production of cellulose, large amounts of eucalyptus bark residues (EBR) ...
Eletrofiação de nanofibras de KBiFe2O5 com potencial aplicação em células solares
(Universidade Federal de São Carlos, 2020-07-15)
Today, ferroelectric semiconductors with perovskite type structure are widely studied due to the possibility of obtaining voltages higher than their band gap and to their contribution to the charge carriers’ separation due ...
Dispersão da lignina Kraft em PBSA e suas interações: efeito da concentração e condições de processamento
(Universidade Federal de São Carlos, 2020-10-29)
Serious environmental issues have been caused by the massive consumption of plastic products. One of many strategies to reduce the environmental impacts is the development of bio-based and biodegradable polymeric materials. ...