Search
Now showing items 1-10 of 44
Desenvolvimento de polímeros à base de glicerol
(Universidade Federal de São Carlos, 2013-08-05)
A importância da caracterização do módulo de elasticidade e do amortecimento de refratários por técnica dinâmica
(Universidade Federal de São Carlos, 2013-03-08)
This dissertation tries to understand the mechanisms involving damping phenomenon in ceramic refractory materials, using a dynamic technique. Damping proves to be an interesting parameter to analyze thermal shock damage ...
Concretos refratários nanoligados para aplicação em unidades de craqueamento catalítico
(Universidade Federal de São Carlos, 2013-09-24)
In the petrochemical industry gasoline and LPG are produced in the fluid catalytic cracking unit (FCCU). The cracking occurs by the contact of crude oil with fluidized fine particles of a ceramic catalyst. The process ...
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 ...
Sinterização por micro-ondas em uma e em duas etapas de varistores à base de ZnO
(Universidade Federal de São Carlos, 2013-09-30)
This thesis is aimed at one-step microwave sintering at frequencies of 2.45 GHz and 30 GHz and the development of two-step microwave sintering (MW-TSS) at 2.45 GHz of ZnO-based nanostructured semiconductor compositions for ...
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 ...
Concretos refratários espinelizados : projeto da microestrutura e análise da corrosão
(Universidade Federal de São Carlos, 2013-10-04)
The addition of magnesium-aluminate spinel (MgAl2O4) in refractories for secondary steel refining has been considered for years one of the more feasible alternatives to reduce the corrosive wear imposed by the aggressive ...
Soldagem por fricção e mistura (FSW) no aço inoxidável austenítico AISI 304
(Universidade Federal de São Carlos, 2013-04-09)
Stainless steels are an important class of engineering materials with attractive properties such as high mechanical and corrosion resistance and thereby widely used in a variety of industries and environments due to its ...
Utilização de alumínio recoberto por aspersão térmica em tubulação de condensadores evaporativos
(Universidade Federal de São Carlos, 2013-12-16)
In evaporative condenser production, galvanized steel has become the most suitable material for piping system production, since it has high corrosion resistance and relative low commercial value. With proper surface ...
Síntese por redução carbotérmica assistida por micro-ondas de carbeto de zircônio
(Universidade Federal de São Carlos, 2013-09-12)
One of the major motivations for the development of new synthesis routes is a continuing need for fast and energy-efficient methods that allow obtaining materials with differentiated technological characteristics and ...