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Synthesis and characterization of CH3NH3SnI3, Mn doped CH3NH3SnI3 and oxygen-deficient TiO2 as visible-light active semiconductors
(Universidade Federal de São Carlos, 2020-02-14)
CH3NH3SnI3 is an environmentally-friendly (lead-free) perovskite whose synthesis depends on SnI2. Some disadvantages of SnI2 include high cost and tin(IV) contamination. Thus, SnSO4 and C16H30O4Sn are presented as cheaper ...
Atomização a gás do aço ferramenta A2: efeito dos parâmetros de processo nas características do pó
(Universidade Federal de São Carlos, 2022-03-23)
Gas atomization is the main method in powder metallurgy to produce powders for additive manufacturing (AM). The gas atomization process allows generally spherical and very fine metallic powders with great yield on the ...
Avaliação das propriedades de armazenagem de hidrogênio através de reação sólido-gás e eletroquímica da liga multicomponente (TiNb)(CrMnFe)₂ com estrutura de Fase Laves tipo C14
(Universidade Federal de São Carlos, 2023-02-24)
Hydrogen is critical for storage and transport of renewable energy. Because it is low-density gas, one of the biggest challenges of its widespread use as an energy vector is in its hardly storage. Metal hydrides are strategic ...
Influência da adição de cério na microestrutura e comportamento de oxidação de aços inoxidáveis Fe-Mn-Si-Cr-Ni com efeito de memória de forma
(Universidade Federal de São Carlos, 2020-01-15)
In this study, the influence of small cerium additions on the microstructure and
oxidation behavior of Fe-Mn-Si-Cr-Ni shape memory stainless steels (SMSSs)
was investigated. The results show that the Ce addition in the ...
Synthesis and graphitization of phenolic resins for carbon-containing refractory applications
(Universidade Federal de São Carlos, 2020-02-03)
Carbon-containing refractories’ (CCRs) present special chemical and thermomechanical properties, which depend on the presence of carbonaceous phase with a structure similar to those of graphite. However, phenolic resins ...
Manufatura aditiva da liga reciclada Al-Fe-Cr-Ti formadora de fase quasicristalina
(Universidade Federal de São Carlos, 2020-02-27)
The precipitation of quasicrystalline phase in an α-Al dendritic matrix provides Al-based alloys with high mechanical and wear resistance, mainly at high temperatures, which are promising for applications as automotive and ...
Estabilidade e habilidade de formação de vidros óxidos
(Universidade Federal de São Carlos, 2020-03-02)
The glass-forming ability (GFA) is a measure of the easiness of vitrification of a liquid during cooling from the liquidus temperature. The GFA is inversely proportional to the critical cooling rate (Rc), whose determination ...
Síntese da perovskita KBiFe2O5 (KBFO), via diferentes rotas, com potencial aplicação em células solares
(Universidade Federal de São Carlos, 2020-02-20)
Clean energies have become a growing quest for sustainable development. Within this context, solar energy stands out, which is renewable, practically inexhaustible and clean. The solar cell is the main instrument that ...
Mg-containing multicomponent alloys produced by high-energy ball milling for hydrogen storage
(Universidade Federal de São Carlos, 2020-02-20)
Hydrogen is a promising energy carrier that allows the use of energy in a sustainable form. However, safe and efficient hydrogen storage is a scientific and technological challenge that still has to be overcome. Recently ...
Fadiga de aços TWIP de baixa densidade produzidos por conformação por spray e forjamento rotativo.
(Universidade Federal de São Carlos, 2020-02-19)
The present study evaluated the mechanical properties in monotonic and
cyclic stress of two low-density steel designed by thermodynamic calculations
aiming stacking fault energy values that would allow different plasticity ...