A5058248628- Microstructure and Mechanical Properties of Steels
- Pigment Synthesis and Properties
- Welding Techniques and Residual Stresses
- Metal Alloys Wear and Properties
- Magnetic Properties and Synthesis of Ferrites
- Aluminum Alloys Composites Properties
- Freezing and Crystallization Processes
- Quantum Dots Synthesis And Properties
- Metallurgy and Material Forming
- Hydrogen embrittlement and corrosion behaviors in metals
- Bone Tissue Engineering Materials
- Advanced ceramic materials synthesis
- Iron oxide chemistry and applications
- Catalysis and Hydrodesulfurization Studies
- Iron and Steelmaking Processes
- Additive Manufacturing and 3D Printing Technologies
- Geography and Environmental Studies
- biodegradable polymer synthesis and properties
- Surface Treatment and Residual Stress
- Biodiesel Production and Applications
- Material Selection and Properties
- Chalcogenide Semiconductor Thin Films
- Industrial Gas Emission Control
- Dental Trauma and Treatments
- Powder Metallurgy Techniques and Materials
Universidade do Estado do Rio de Janeiro
2022-2025
Military Institute of Engineering
2016-2022
Carbazole‐based compounds have demonstrated interesting physical and chemical properties for OLED devices. 3,6‐diphenylcarbazole has a direct application in the composition of structures with potential to suppress loss efficiency under high luminance conditions along its use emitting layer. In this study, we reveal explore which triggered electron beams (e‐beams) solid state Suzuki‐Miyaura type reaction between 3,6‐diiodocarbazole phenylboronic acid could be carried out. Applying typical SEM...
Carbazole‐based compounds have demonstrated interesting physical and chemical properties for OLED devices. 3,6‐diphenylcarbazole has a direct application in the composition of structures with potential to suppress loss efficiency under high luminance conditions along its use emitting layer. In this study, we reveal explore which triggered electron beams (e‐beams) solid state Suzuki‐Miyaura type reaction between 3,6‐diiodocarbazole phenylboronic acid could be carried out. Applying typical SEM...
The automotive industry has experienced rapid growth, with lightweight materials becoming a significant research focus. Among these materials, low-density Fe-Mn-Al-C alloys show promise for this kind of application. To optimize the hot workability parameters practical applications, it is essential to explore deformation behavior alloys. In study, we investigated alloy Fe-0.77Mn-7.10Al-0.45C-0.31Nb using plane-strain compression tests several temperatures (850, 950, 1050, and 1150 °C) nominal...
The API 5L X70 steel is used in high-pressure gas transmission pipelines. Because of this, knowledge presence residual stress and their magnitude important to assess the material integrity service. For pipeline manufacturing, tubes need be curved which often made using hot induction bending process. This process can introduce different depending tube position. this research, order evaluate stress, was an that previously by Samples were taken from extrados, intrados, neutral line straight...
Reducing pollutant emissions and improving safety standards are primary targets for modern mobility improvement. To meet these needs, the development of low-density steels containing aluminum is a new frontier research automotive applications. Low-density Fe-Mn-Al-C alloys promising. In this regard, an alloy with high content niobium addition belonging to system was evaluated understand possible phase transformations thus obtain transformation diagram by continuous cooling help future...
The purpose of this work was to study the influence different kinds rolling on magnetic properties NOG steel, an electric steel widely used in electrical motors. These are highly correlated with crystallographic texture material, which can be changed by rolling. Three were examined: conventional rolling, cross-rolling and asymmetrical determined X-ray diffraction calculated from a theoretical model that related induction through anisotropy energy. results show yields higher values than other...
High Strength Low Alloy steels (HSLA) for oil and gas pipelines should display high mechanical strength, toughness, ductility weldability. In this work we studied the influence of quenching tempering temperature on yield ultimate tensile percent elongation hardness API 5L steel pipes in order to optimize heat treatments be performed after hot induction bending material. The thermal cycles involved soaking temperatures 880, 920 960 °C, cooling water at 15, 23 31 °C 530, 600 670 °C. From this,...
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An experimental study on the distribution of residual stresses induced by shot peening samples SAE 1020 steel with pre-existing compressive is presented. Two similar geometries were subjected to a heat treatment relieve stress. Then, one was cementation process introduce stresses. Both samples, and without cementation, same treatment. Using X-ray diffraction electrolytic polishing remove superficial layers, depth-resolved stress obtained. It concluded that effect should be considered as...
PbS semiconductor nanoparticles have been shown to be promising in applications such as microelectronics, optoelectronics and optics it can also useful electroluminescent devices light-emitting diodes. In this system, when crystal sizes are smaller than the Bohr radius, excitons become confined all three spatial directions, a phenomenon called quantum confinement. This effect is an interesting aspect studied, since optical electronic properties of materials size dependent particles. The use...