Buscar
Itens para a visualização no momento 71-80 of 273
Conformação por spray da liga formadora de fase amorfa Fe66B30Nb4
(Universidade Federal de São Carlos, 2008-08-07)
The goal of this doctoral thesis was to contribute to the technology of amorphous metals production with dimensions of the order of millimeters or centimeters through the process of spray forming for the ternary Fe66B30Nb4 ...
Estudos microrreológicos da blenda PBT/SAN.
(Universidade Federal de São Carlos, 2006-09-22)
This work was motivated by the need of a better understanding of the
microrheological characteristics of polybutylene terephthalate, PBT, polymer
blends, such as the matrix phase PBT and the styrene-acrylonitrile, SAN
copolymer ...
Estudo da tenacidade à fratura por meio do método do trabalho essencial de fratura (EWF) da blenda PBT/ABS, reforçada com fibra de vidro
(Universidade Federal de São Carlos, 2008-06-05)
High rubber content acrylonitrile-butadiene-styrene terpolymer (ABS) has been used to tough PBT. As a result, super tough PBT/ABS blends under notched Izod impact have been obtained. However, there has been a significant ...
Microestrutura e propriedades mecânicas de ligas Al-Si hipoeutéticas conformadas por spray.
(Universidade Federal de São Carlos, 2005-06-29)
The aims of this work were the microstructural and tensile properties
characterization of the hypoeutectic spray formed Al-Si 319 and 380 alloys. The
alloys were melted by induction furnace, gas atomized with nitrogen ...
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 ...
Efeito da adição de Ni na microestrutura bainítica de um novo aço para roscas e cilindros de plastificação de polímeros
(Universidade Federal de São Carlos, 2019-09-02)
Nitriding steels, such as DIN 1.8550, are used in the manufacture of screws and barrels for injection molding machines and plastic extruders. The hardening process of DIN 1.8550 occurs via water or oil quenching followed ...
Efeito do inoculante Al-Nb-B na microestrutura e propriedades mecânicas da liga AA2017 fabricada por fusão em leito de pó a laser
(Universidade Federal de São Carlos, 2023-01-24)
The blending of finer powders of Ti, Zr, Ta, Sc, and Nb compounds as inoculants has been a promising strategy to modify precipitation-hardened aluminum alloys for laser-based powder bed fusion process (L-PBF), promoting a ...
Desenvolvimento de sensores colorimétricos baseados em compostos amido/cera de abelha e antocianinas por casting contínuo para embalagens inteligentes
(Universidade Federal de São Carlos, 2023-12-19)
Intelligent packaging are systems capable of communicating the conditions of the packed food and different approaches can be used to produce such packaging, for instance, the production of quality indicators based on ...
Microstructure, corrosion, and wear resistance of a boron-modified duplex stainless steel produced by laser powder bed fusion
(Universidade Federal de São Carlos, 2024-03-18)
A duplex stainless steels (DSS) containing 0.3 and 0.6 wt.% of boron were produced by laser powder bed fusion (L-PBD) with parameters based on Box-Behnken design. The microstructure was evaluated by XRD, OM, SEM, EBSD, ...
Design de ligas multicomponentes do sistema Ti-V-Nb-M (M = Cr, Co E Ni) para armazenagem de hidrogênio
(Universidade Federal de São Carlos, 2023-05-15)
Body Centered Cubic (BCC) multicomponent alloys have gained attention in the research of materials for H2 storage. These alloys have the potential to optimize H2 storage properties via compositional control. However, the ...